WRY ‘CUDA & SARDONIC SMILES, ABACO BAHAMAS

January 19, 2020 by Rolling Harbour

WRY ‘CUDA & SARDONIC SMILES, ABACO BAHAMAS

There’s no doubt about it, barracudas have a particularly unwelcoming look to them. They exude menace. There’s something about the torpedo shape, the primitive head, and the uncomfortably snaggle-toothed grin-with-underbite that suggests a creature not to be underestimated.

And that smiley mouth – rather scornful and derisive, is it not? A powerful creature in its element, where you are the intruder… and it sees it like that too. An adult barracuda may grow to nearly 6 foot long. Your are only temporarily of its world, and (it observes) you are keeping your distance.

The dental arrangements of a ‘cuda are a wonder in themselves. The teeth are razor sharp; an orthodontist’s nightmare because they are all different sizes and grow at different angles. Some are conventionally set in the jaws, but some actually grow from the roof of the mouth. There are ‘normal’ sized teeth interspersed with wicked-looking fangs that randomly grow facing forwards, backwards and sideways.

WHY THE UNTIDY MOUTH FURNITURE?

The name Barracuda is thought to derive from the Spanish word barraco meaning (in one of its senses) “overlapping teeth”. The jaws that contain the teeth are strong, and the underbite adds to the effectiveness of ‘cuda predation. Prey is highly unlikely to escape once caught. When the jaws snap shut, the sharp angled teeth – particularly the back-facing ones (cf fishhook barbs) prevent the victim from pulling away. Then the munching and shredding can begin inside what is essentially a perfectly equipped multi-bladed mincing machine.

Credits: Melinda Rogers / Dive Abaco except #3 & #8 Melinda Riger / Grand Bahama Scuba

Here’s looking at you…

WHITE-CHEEKED PINTAILS and BAHAMA DUCKLINGS

January 13, 2020 by Rolling Harbour

WHITE-CHEEKED PINTAILS and BAHAMA DUCKLINGS

The white-cheeked (‘Bahama’) pintail Anas bahamensis (aka ‘Bahama duck’) is everyone’s favourite dabbling duck. Or at least it ought to be. And when there are ducklings swimming with the adults, there is no emoticon yet devised that will convey the extremes of cuteness achieved.

Credits: all absolutely adorbs photos are by Tom Sheley & Charles Skinner

BABY SPERM WHALE, ABACO, BAHAMAS: HOPE FOR A NEW DECADE

January 6, 2020 by Rolling Harbour

BABY SPERM WHALE, ABACO, BAHAMAS

HOPE FOR A NEW DECADE

Looking back at 2019, one of the most enjoyable posts to put together featured an adult sperm whale with a neonate calf. The wonderful photos were obtained last summer during 2 research trips in the deeper water off the south coast of Abaco by the Bahamas Marine Mammal Research Organisation (BMMRO) It seems fitting to greet the new decade with a revised version of my original post. There’s optimism in these images, and more generally in the recovery in some areas of the savagely depleted whale populations of past decades. I’d like to think that a smiling baby whale holds out hope for the 2020s.

Sperm Whale baby (neonate) Abaco Bahamas (Charlotte Dunn / BMMRO)

These are just some of the BMMRO research team’s images and footage of the baby sperm whale investigating the underwater world it has just been born into. Hopefully it will flourish and live for decades. If it does not, the overwhelmingly likely cause will be mankind, either directly or indirectly.

CREDITS: Brilliant close-up footage plus the clips I have taken from it – Charlotte Dunn / Diane Claridge / BMMRO.

DONATE: If you are touched by the magic of this little Bahamas sperm whale, may I invite you to consider making a donation to BMMRO for its research and conservation work – a scientific commitment that reaches far beyond the waters of the Bahamas. The system is set up to process donations from just $10 upwards, and every cent is used to further the work of BMMRO. Please click the logo below to reach the right page directly.

CHRISTMAS-COLOURED BIRDS 2: ABACO PARROT

December 23, 2019 by Rolling Harbour

CHRISTMAS-COLOURED BIRDS 2: ABACO PARROT

A VERY HAPPY TO ALL FOLLOWERS OF ROLLING HARBOUR…

…AND TO EACH AND EVERY RANDOM DROP-BY TOO!

SEE YOU NEXT DECADE!

Credit: Nina Henry, photographed on Abaco, Bahamas for “The Birds of Abaco”

BRAIN WAVES: UNDERSEA CORAL MAZES & LABYRINTHS

December 19, 2019 by Rolling Harbour

BRAIN WAVES: UNDERSEA CORAL MAZES & LABYRINTHS

The name ‘brain coral’ is essentially a no-brainer. How could you not call the creatures on this page anything else. These corals come in wide varieties of colour, shape and – well, braininess – and are divided into two main families worldwide.

Each ‘brain’ is in fact a complex colony consisting of genetically similar polyps. These secrete CALCIUM CARBONATE which forms a hard carapace. This chemical compound is found in minerals, the shells of sea creatures, eggs, and even pearls. In human terms it has many industrial applications and widespread medicinal use, most familiarly in the treatment of gastric problems.

The hardness of this type of coral makes it a important component of reefs throughout warm water zones world-wide. The dense protection also guarantees (or did until our generation began systematically to dismantle the earth) – extraordinary longevity. The largest brain corals develop to a height of almost 2 meters, and are believed to be several hundred years old.

HOW ON EARTH DO THEY LIVE?

If you look closely at the cropped image below and other images on this page, you will see hundreds of little tentacles nestled in the trenches on the surface. These corals feed at night, deploying their tentacles to catch food. This consists of tiny creatures and their algal contents. During the day, the tentacles are retracted into the sinuous grooves. Some brain corals have developed tentacles with defensive stings.

THE TRACKS LOOKS LIKE MAZES OR DO I MEAN LABYRINTHS?

Mazes, I think. The difference between mazes and labyrinths is that labyrinths have a single continuous path which leads to the centre. As long as you keep going forward, you will get there eventually. You can’t get lost. Mazes have multiple paths which branch off and will not necessarily lead to the centre. There are dead ends. Therefore, you can get lost. Check out which type of puzzle occurs on brain coral. Answer below…**

CREDIT: all amazing underwater brain-work thanks to Melinda Rogers / Dive Abaco; Lucca Labyrinth, Keith Salvesen / Rolling Harbour

** On the coral I got lost straight away in blind alleys. Therefore these are mazes. Here is a beautiful inscribed labyrinth dating from c12 or c13 from the porch of St Martin Cathedral in Lucca, Italy. Very beautiful but not such a challenge.

CHRISTMAS-COLOURED BIRDS 1: PAINTED BUNTING

December 17, 2019 by Rolling Harbour

CHRISTMAS-COLOURED BIRDS 1: PAINTED BUNTING

Credit: Tom Sheley, photographed at Bahama Palm Shores, Abaco, Bahamas for “The Birds of Abaco”

‘DEEP DIVERS IN DIVERS DEEPS’: CUVIER’S BEAKED WHALES

December 13, 2019 by Rolling Harbour

‘DEEP DIVERS IN DIVERS DEEPS’: CUVIER’S BEAKED WHALES

JOURNEY TO THE WORLD’S MIDNIGHT ZONE

Please join me in a dive down from the sparkling surface of the turquoise sea to the twilight zone at 200 meters. You’ll pass plenty of sea-life on the way: manatees grazing on seagrass just below the surface; reef fish, barracudas, reef sharks, mahi-mahi, maybe an orca at 100 meters. Other familiar creatures that are found even lower include a few reef fish, some shark species and green sea turtles. You are now running out of clear light.

As you descend from 200 meters the waters become murky, then inky. The variety of inhabitants and their numbers are gradually decreasing. There are eels, some sharks, squid, stranger deep-water creatures. You may be surprised to see familiar bottlenose dolphins, recorded as diving nearly 300 meters. At 332 meters you will equal the deepest point any human being has ever scuba-dived (Ahmed Gabr 2014). There is little light, but you still have a long way to go to reach your goal.

Descending still deeper, species and numbers continue to thin out. Around the world the limits of larger recognisable species is being reached – more shark species, tuna, chinook salmon, emperor penguins, swordfish, the few corals that can survive the depth. As the light fades to black, giant creatures and strange fish abound. Huge crabs. Sunfish. The (no-longer-extinct) Coelocanth. Massive octopuses.

Deeper down, nearing 1000 meters now, there are still some familiar species. Leatherback turtles; Baird’s beaked whales (nb not in the Atlantic); and at 920 meters, the deepest recorded sperm whale dive. It’s pitch dark: you have reached the level that sunlight never penetrates. You are in the Midnight Zone.

DEEP OCEAN DWELLERS

In black depths below 1000 meters, creatures have adpated to create their own light sources – so-called bioluminescence. This is the realm of the self-lit anglerfish, the blobfish and the goblin shark. It’s the Attenborough world of deep sea exploration. The geology is changing: there are hypervents, volcanic rocks, heavy metals. Below are the deep ocean-floor trenches. Yet there are still recognisable species down here, diving astonishingly deep to 1800 meters to feed – not least the narwhal which makes this trip several times a day to feed.

We need to quicken up the descent now – we have to get down nearly twice as far as this to reach our destination…

We pass large squid and isopods, the deepest diving shark – the Greenland, the 10 meter-long 700 kilo colossal squid – yet amazingly there are marine mammals yet to be encountered: at 2400 meters we drift past a huge elephant seal. There are evil-looking creatures down here with names to match – devilfish, viperfish, black swallowers that can eat a larger fish whole, vampire squid and zombie worms.

At 3000 feet, we finally end our quest. We have reached the depth to which the world’s deepest diving mammal has been recorded: the Cuvier’s beaked whale Ziphius cavirostris

Cuvier’s beaked whales, or “goose-beaked whales,” are not rare. For a start, unlike many beaked whale species, they inhabit most oceans and seas in the world and have the most extensive range. Unsurprisingly therefore, they are one of the most often sighted beaked whale species and one of the best studied.

FIN FACT

You may be wondering about the pressure exerted on a creature at a depth of 3000 meters. The answer is, an astounding 300 atm (atmospheres), enough to crush all but the hardiest and best adapted of species. The question how these whales manage to survive at such a depth is one for the future…

The Cuvier’s is one of the 3 beaked whale species found in Bahamas waters. Like the rarer Blainville’s and Gervais’s beaked whales, the Cuvier’s is the subject of ongoing research by the BAHAMAS MARINE MAMMAL RESEARCH ORGANISATION BMMRO.

The research into marine mammal populations in the Bahamas and far beyond is focussed on the massive increase in single and mass strandings, including recently in a remote area of Scotland (Hebrides) where more than 40 Cuvier’s were washed ashore.

One significant area of research examines the effect on marine mammals of man-made noise. There is plenty of it in the world’s oceans caused by noise pollution in and around shipping channels that traverse marine mammal migration, feeding and breeding grounds; naval surface and submarine exercises; seismic surveys, sonar waves and undersea resource investigations. The evidence of sound / acoustic damage as an additional hazard for marine mammals is starting to look very clear.

DEEP WATER INFOGRAPHIC

Do not miss this wonderful work by Neal Agarwal. This article is based around it and includes facts and images derived from his incredibly complex structure that has resulted in a remarkably simple resource for layman and ocean-lover alike (I realise these categories may overlap). To see the entire masterpiece, double click of the box below – “it will be worth it”.

CREDITS: Neal Agarwal; BMMRO / Charlotte Dunn; M.Rosso GIMA – IUCN; NOAA Fisheries; BW – Getty – Times; Pierangelo Pirak / BBC Earth (depth infographic), general sources – BMMRO, IUCN, NOAA, WDC

As ever, the Bahamas Philatelic Bureau has produced a wonderful stamp special issue

EEL-SPOTTING: FORAYS WITH MORAYS (7)

December 9, 2019 by Rolling Harbour

EEL-SPOTTING: FORAYS WITH MORAYS (7)

MORAY EELS are plentiful around the reefs of the Bahamas. Some species, anyway. The ones you are most likely to encounter are green morays, and the spotted morays shown here. Less common are chain and golden-tail morays and, rarer still I suspect (because I have only one image in the archive…) is the ‘purple-mouth’.

Despite their moderately intimidating appearance – an adult may grow to 1.5 meters or more, with sharp teeth at the front end – these eels are not especially aggressive unless provoked. Best to assume that all humans will behave respectfully around them and remember that people are the intruders in the eels’ domain.

Morays tend to be loners of the reefs, but they do gather in groups from time to time. And as shown below, they will also hunt with other species, for example this tiger grouper.

Sharp-eyed, sharp-toothed

Looks friendly enough…

A long and surprisingly large body, generally concealed in the crevices of the reef

Credits: Melinda Riger / Grand Bahama Scuba

Lurkin’ Good

BAHAMA WARBLER: ABACO’S NEWEST ENDEMIC RESIDENT

December 4, 2019 by Rolling Harbour

BAHAMA WARBLER: ABACO’S NEWEST ENDEMIC RESIDENT

I was looking at the list of the dozens of Abaco bird species I have featured over the years, when I was struck by the complete omission of one of Abaco’s most significant small birds – the Bahama Warbler Setophaga flavescens. This warbler species is of the most important in the Bahamas for several reasons, any one of which should have prompted me to showcase this lovely bird before now.

A SPECIALITY BIRD

The Bahama warbler is a significant species with a near-unique status in the Bahamas:

Found only on Abaco and Grand Bahama
One of only 5 bird species endemic to the Bahamas
One of only 2 endemic warbler species on Abaco (with the BAHAMA YELLOWTHROAT)
One of only 5 permanent year-round resident warblers (33 others are migratory), the other 3 being the OLIVE-CAPPED, YELLOW, and PINE warblers.

Until 2011, the BAWA was classified as a subspecies of the YELLOW-THROATED WARBLER. The ornithological powers-that-be then recognised that the two species were distinct in both appearance and in vocalisation, and split them into separate species (this splitting / amalgamating process occurs annually and plays havoc with the precious ‘Life Lists’ kept with such rigour by ardent birders**.

The BAWA has such a confined range that even the extensive reach of the wonderful Cornell Lab of Ornithology has not got as far as this bird. The info sections of the otherwise comprehensive website for Neotropical Birds are blank and waiting for someone to upload some details. Here are a few facts in one of a very good series of info-graphics produced by the BAHAMAS NATIONAL TRUST.

** I have never even started a Life List, which demonstrates just how lightweight I am as a bird person

Credits: Alex Hughes (1, 4); Bruce Hallett (2, 6); Woody Bracey (3); Tom Sheley (5); Range Map, Cornell; Info G, BNT

BAHAMAS MARINE MAMMAL RESEARCH: 20/20 VISIONS

November 29, 2019 by Rolling Harbour

Neonate Sperm Whale Calf, Abaco Bahamas

BAHAMAS MARINE MAMMAL RESEARCH: 20/20 VISIONS

Change is in the air. And in the sea. Above, you will notice the brand new logo of the Bahamas Marine Mammal Research Organisation BMMRO based in Sandy point, Abaco. Several major Bahamas-wide projects are in progress or in preparation, and as we approach 2020, this is the perfect time for some marine mammal news, illustrated with great images from BMMRO research trips.

Bottlenose Dolphins

BMMRO’s scientific research over many years is a prime reason why we all have the privilege of seeing the neonate sperm whale calf in the header image. It was photographed with its mother off South Abaco last Spring. Much-appreciated support of the essential research and conservation work of the organisation helps to ensure that the whales, dolphins and manatees in Bahamas waters are watched over, documented in minute detail (even their calls) and protected. The marine mammals of the Bahamas have a promising future looking ahead to 2020, and well beyond.

Blainville's Beaked Whale, Abaco Bahamas (BMMRO)

Blainville’s Beaked Whale and young calf

Humpback Whale

ATLANTIC SPOTTED DOLPHINS

WEST INDIAN MANATEES – GINA and RANDY

All photographs and video footage: BMMRO

Sperm Whale tailing, Abaco Bahamas (BMMRO)

Sperm Whale Tailing, Bahamas

ABACO HUMMINGBIRDS: WHAT’S THE NEWS?

November 24, 2019 by Rolling Harbour

ABACO HUMMINGBIRDS: WHAT’S THE NEWS?

SIGHTINGS POST-DORIAN

Since the hurricane struck nearly 3 months ago, order is slowly being imposed on the chaos. Debris is being removed in vast quantities, building repairs are in progress, shops and some businesses are starting to open – and even (only last week) a bank.

Specific bird news from Abaco post-Dorian is sporadic, with people having plenty of other concerns at the moment and for some time yet. The wellbeing of the parrots has been checked during a scientific survey last month. There is infrequent but positive news of the shorebirds, especially of the piping plovers that are counted each winter season. There have been some reports of the warblers (of which there are an astonishing 38 species recorded for the Island and its cays).

As yet, I have seen no recent mentions at all in SocMed about the hummingbirds – the endemic Bahama Woodstar (#1 F; #2 M); and the Cuban Emerald (#3 F; #4 M). Are they around? Is anyone seeing them darting about like jinking bullets or feeding on flowers on the hover? I’m not on-island, so I’d be very pleased to know: are the hummers still humming?

Photos: Tara Lavallee (1); Bruce Hallett (2); Keith Salvesen / Rolling Harbour Abaco (3), (4)

ELKHORN CORAL, ABACO BAHAMAS (DORIAN UPDATE)

November 19, 2019 by Rolling Harbour

ELKHORN CORAL, ABACO BAHAMAS (DORIAN UPDATE)

Elkhorn coral (Acropora palmata) is a widespread reef coral, an unmistakeable species with large branches that resemble elk antlers. The dense growths create an ideal shady habitat for many reef creatures. These include reef fishes of all shapes and sizes, lobsters, shrimps and many more besides. Some of these are essential for the wellbeing of the reef and also its denizens.

GOOD POST-DORIAN NEWS ABOUT ABACORAL

A recent report from FRIENDS OF THE ENVIRONMENT brings encouraging news about the reefs of Abaco post-hurricane, and an indication of the resilience of the coral to extreme conditions (with one exception for a reef too close to the shore to avoid damage from debris).

Shortly before Dorian hit, The Perry Institute for Marine Science and its partners surveyed reefs across Grand Bahama and Abaco to assess their health. Following Dorian, they were able to reassess these areas and the impact of the hurricane. Over the 370 miles that the surveys covered, minimal damage was found on the majority of reefs. Unfortunately Mermaid Reef, where FRIENDS does most of our educational field trips, sustained extensive damage due to debris from its close proximity to the shoreline. We are looking into how we can help with logistics to get the debris removed, and hopefully the recovery will begin soon.

Elkhorn Coral, Pelican Cays, Abaco Bahamas (Friends of the Environment)

Elkhorn coral standing strong post-Dorian at Sandy Cay Reef, Pelican Shores, Abaco

The scientists were also able to visit four of the Reef Rescue Network’s coral nurseries and assess out-planted corals in national parks in both Grand Bahama and Abaco. The great news is that all of the corals on these nurseries survived the storm and will be used to support reef restoration. Also from the surveys, it appears that our offshore reefs around Abaco sustained minimal damage, including Sandy Cay Reef in Pelican Cays Land and Sea Park (pictured above). This gives us hope for the recovery of our oceans post-Dorian and proves how resilient these amazing ecosystems are.

Examples of species vital for healthy corals include several types of PARROTFISH, the colourful and voracious herbivores that spend most of their time eating algae off the coral reefs using their beak-like teeth. This algal diet is digested, and the remains excreted as sand. Tread with care on your favourite beach; in part at least, it will consist of parrotfish poop.

Other vital reef species living in the shelter of elkhorn and other corals are the CLEANERS, little fish and shrimps that cater for the wellbeing and grooming of large and even predatory fishes. Gobies, wrasse, Pedersen shrimps and many others pick dead skin and parasites from the ‘client’ fish including their gills, and even from between the teeth of predators. This service is an excellent example of MUTUALISM, a symbiotic relationship in which both parties benefit: close grooming in return for rich pickings of food.

VULNERABILITY TO OFFICIALLY NON-EXISTENT CLIMATE CRISIS

Formally abundant, over just a couple of decades elkhorn coral has been massively affected by [~~climate change, human activity and habitat destruction]~~ inexplicable natural attrition in many areas. One cause of decline that is incontrovertible is damage from storms, which are empirically increasing in both frequency and intensity, though apparently for no known reason.

Physical damage to corals may seriously impact on reproductive success; elkhorn coral is no exception. The effects of a reduction of reef fertility are compounded by the fact that natural recovery is in any case inevitably a slow process. The worse the problem gets, the harder it becomes even to survive let alone recover.

SO HOW DOES ELKHORN CORAL REPRODUCE?

There are two types of reproduction, which one might call asexual and sexual:

Elkhorn coral reproduction occurs when a branch breaks off and attaches to the substrate, forming a the start of a new colony. This process is known as fragmentation and accounts for roughly half of coral spread. Considerable success is being achieved now with many coral species by in effect farming fragments and cloning colonies (see above, Reef Rescue Network’s coral nurseries)
Sexual reproduction occurs once a year in August or September, when coral colonies release millions of gametes by broadcast spawning (there’s much more to be said on this interesting topic, and one day I will)

THE FEATURED PHOTOGRAPHS

You may have wondered in which healthily coral-infested waters these superb elkhorn coral photographs were taken. Did I perhaps source them from a National Geographic coral reef special edition? In fact, every image featured was obtained among the reefs of Abaco.

All except the recent Perry Institute / Friends of the Environment photo were taken by Melinda Rogers of Dive Abaco, Marsh Harbour. The long-established and highly regarded Dive Shop she and her husband Keith run was obliterated (see above) less than 3 months ago by Hurricane Dorian, along with most of the rest of the town. It’s a pleasure to be able to showcase these images taken in sunnier times.

AN OCTOPUS’S GARDEN, BAHAMAS

November 12, 2019 by Rolling Harbour

AN OCTOPUS’S GARDEN, BAHAMAS

Many of us, from time to time, might like to be under the sea, warm below the storm, swimming about the coral that lies beneath the ocean waves. Though possibly not resting their heads on the seabed. This undeniably idyllic experience would be perfected by the presence of an octopus and the notional garden he lives in. Enough to make any person shout and swim about – and quite excessively at that.

The extra ingredient here is that these photographs were taken on the reef off the southern coast of Grand Bahama last week, less than 2 months after the island (along with Abaco) was smashed up by Hurricane Dorian. Thankfully, Grand Bahama Scuba has been able to return to relative normality and run diving trips again. Moreover, fears for the reefs have proved relatively unfounded. These images suggest little damage from the massive storm. The Abaco reefs have not yet been able to be assessed in any detail.

The feature creature here was observed and photographed as it took it a octopodic wander round the reef. The vivid small fishes are out and about. The reef and its static (technically ‘sessile’) life forms – corals, anemones and sponges – look in good order. The octopus takes a pause to assess its surroundings before moving on to another part of the reef.

Octopus on the coral reef, Bahamas (Melinda Riger / GB Scuba)

THE PLURAL(S) OF OCTOPUS REVISITED

A long time ago I wrote a quasi-learned disquisition on the correct plural for the octopus. There were at least 3 possibilities derived from Greek and Latin, all arguable but none so sensible or normal-sounding as ‘octopuses‘. The other 2 are octopi and octopodes. If you want the bother with the details check out THE PLURAL OF OCTOPUS.

There’s an aspect I missed then, through rank ignorance I’d say: I didn’t check the details of the Scientific Classification. Now that I am more ‘Linnaeus-woke’, I have two further plural candidates with impeccable credentials. Octopuses are cephalpods (‘headfeet’) of the Order Octopoda and the Family Octopodidae. These names have existed since naturalist GEORGES CUVIER (he of the beaked whale found in Bahamas waters) classified them thus in 1797.

RH ADVICE stick with ‘octopuses’ and (a) you won’t be wrong (b) you won’t get into an un-winnable argument with a pedant and (3) you won’t sound pretentious

OPTIONAL MUSICAL DIGRESSION

Whether you are 9 or 90, you can never have too much of this one. If you are somewhere in the middle – or having Ringo Starr free-styling vocals doesn’t appeal – you can. Step back from the vid.

All fabulous photos by Melinda Riger, Grand Bahama Scuba, Nov 2019

‘LIKE’ THE CLAPPERS: ON THE RAILS IN ABACO

November 9, 2019 by Rolling Harbour

‘LIKE’ THE CLAPPERS: ON THE RAILS IN ABACO

CLAPPER RAILS Rallus crepitans are elusive birds of mangrove swamp and marsh, more frequently heard than seen. They tend to lurk around in foliage and are easy to overlook. They are creatures of the margins rather than open ground. You may come across one foraging secretively, beak-deep in the mud.

Tom Sheley’s wonderful photos featured here of a preening clapper rail were taken during our backcountry explorations to locate and photograph species for BIRDS OF ABACO. By being both patient and an early riser, Tom managed to capture this fine bird engaging in some quality grooming. The one below is ‘vocalising’ – known in rails as ‘rousing’ – in mid-preen.

Clapper rails are capable of swimming and even of flying if they choose to. However the most likely activities you are likely to observe will be skulking, picking their way through marginal vegetation, or (if you are lucky) doing some beak-deep foraging in the mud. Occasionally they run, a process that looks endearingly comical and which possibly gives rise to their name.

It almost goes without saying nowadays, but the biggest threat to these rather charming inoffensive birds is habitat loss. Which is to say, mankind either directly or indirectly. Drive the bulldozers through the mangroves and marshland of sub-tropical coastal areas, chuck down a few acres of concrete… and the clappers will very soon become clapped out. As they will if the climate we are unarguably changing ruins their unobtrusive lives.

COMPULSORY LINGUISTIC STUDY

When I last wrote about this species its binomial name was Rallus longirostris ie simply ‘long-beaked rail’. Since then the increasingly frenetic annual turmoil of official AOU shuffling species about and messing with their names has resulted in the clapper rail being re-designated Rallus crepitans or ‘rattling / rustling rail’, I assume from the call. There are other rail-name innovations that, reading about them just now, made me crack open a beer instead of wanting to tell you about them.

OPTIONAL LINGUISTIC DIVERSION

“TO RUN LIKE THE CLAPPERS”. This phrase seems to be fairly recent, most likely originating as military (?Air Force) slang early in WW2 or possibly from earlier conflicts. Some suggest it is a rhyming slang bowdlerisation of ‘run like hell’ with ‘clapper(s)’ standing for ‘bell’, along the lines of the Cockney “I bought a brand new whistle” (whistle and flute = suit). Almost all plausible explanations relate to bells, and some argue that it simply reflects the rapid speed of the clapper of a vigorously rung handbell. This derivation as a link to the bird seems tenuous at best.

Photo credits:Tom Sheley, Sandy Walker, Erik Gauger, University of Amsterdam (print).

BAHAMAS REEF LIFE (1): FRENCH ANGELFISH

November 5, 2019 by Rolling Harbour

BAHAMAS REEF LIFE (1): FRENCH ANGELFISH

The massive destruction and dislocation caused on both Abaco and Grand Bahama by Hurricane Dorian is well-documented. The regeneration of both islands is making unsteady progress towards a stability that still seems many months away. In many locations it is still ‘two steps forward, one step back’. It remains a moot point whether ‘normality’, as it was just over 2 months ago, will ever be quite the same again.

We know how things are on land. As far as Abaco is concerned, few people can say how the coral reefs have been affected by the massive storms. Boats that were not flung ashore were sunk instead. Marinas and their infrastructure all but disappeared.

Dive Shops, like so many thriving businesses in MH, have been reduced to rubble by this cruellest of extreme tropical storms. For the time being at least, they are damaged beyond use. I have seen no reports about the conditions in – for example – Fowl Cays National Park, a coral and reef-life rich marine preserve that was directly in the hurricane’s path. It may be weeks before an assessment can be made.

Happily, Melinda and Fred Riger of Grand Bahama Scuba have very recently been able to reopen their business. Melinda is, as regular readers will know, a wonderful underwater photographer. She kindly gives me the freedom of her extensive photo archive, accumulated over many years. The focus today is on French angelfish on the reefs of Grand Bahama.

Many of the photos here have been taken during the last 3 weeks or so, as diving becomes more of a daily exercise and customers are able to return to explore the underwater world of the reefs. Adult French angelfish have handsomely decorated flanks and golden eye-rings. The small striped ones with blue flashes on their fins are juveniles.

There are three angelfish species in the northern Bahamas – Queen, Gray and French. I have chosen to feature French angelfish because as it happens the juveniles of the species found since Dorian by Melinda and Fred may provide some insight into the subsurface effects of this huge storm.

As is evident from Melinda’s recent photos, the reefs off the south coast of Grand Bahama are relatively unscathed. Corals that she and Fred planted after the last hurricane have ‘taken’ and remain in place. However the juvenile fish now being seen nosing around the reefs in quantity may tell a story of disruption elsewhere.

The juvenile angelfish – as with the young of many other species – tend to live in the relative safety of the mangroves as they grow towards adulthood and are ready to move to the reefs. However, the unusual numbers of juveniles seen in the open during recent weeks suggest that the storm-damage to mangrove swamps in shallower water has unexpectedly displaced the juveniles to the reefs.

This theory seems to apply to juveniles of other species recently encountered. What can be said is that, if even if displaced, there are plenty of healthy juvenile as well as adult fish around. And the justifiable fears of serious damage to the corals have not been borne out. It remains to be seen whether a similar situation exists in Abaco waters.

Credits: all fantastic photos, Melinda Riger / Dive Abaco. It’s great that you have been able to reopen the business and restart having been forced to suspend operations completely.

A BOUQUET OF HIBISCUSES ON ABACO, BAHAMAS

November 1, 2019 by Rolling Harbour

A BOUQUET OF HIBISCUSES ON ABACO, BAHAMAS

I haven’t featured flower species for a long time. There are a number of reasons why this webular location is low on flower power. Under duress, I’d probably say that, though gorgeous and a joy to all, flowers and plants are essentially one trick ponies. Or maybe peonies?

Essentially the drawback with flowers is that they don’t fly and they can’t swim. There’s no motion to them that isn’t caused by an outside agency such as a breeze (unless you spend time actually watching them grow, I suppose). I feel more comfortable with more mobility around me.

The hibiscus is surely one of the prettiest flowers on Abaco or indeed anywhere else. Mostly they are pentamerous, which is to say 5-petalled; and they have an unmistakeable central adornment that I’ve had to check the name of. Then I discovered that someone on Pinterest had done the heavy lifting for me with all the other parts of a hibiscus.

One exception to the usual pentamerous arrangement is the white hibiscus shown below.

I have also remembered to check the correct plural of ‘Hibiscus’. Some while back, I examined the candidates for the correct plural form for more than one OCTOPUS. I thought I might now be back in that strange Greco-Roman arena where -uses or -usses compete with -i or -odi for primacy. Thankfully, it is simply ‘octopuses’ and ‘hibiscuses’. And even if, technically, a different form could be insisted on to be correct, it will still sound wrong.

Another striking hibiscoid variant is the beautiful coral hibiscus, with its elegant construction and extravagantly fringed petals.

These flowers are powerful insect attractants, especially for the butterflies. One of the only partly successful photos I have ever taken of the annoyingly perpetual motion Polydamus (Gold Rim) Swallowtail is below. There’s nearly half a wing at rest. And even that isn’t sharp.

Readers who have stuck with this blog for a while (thank you both) may recall my enthusiasm for the excellent way in which the Bahamian Government honours the wildlife of the Bahamas with frequent special issues of stamps and coins. You can find out more with these links: BAHAMAS STAMPS and BAHAMAS CURRENCY. Even the hibiscus has been featured on the coinage, not once but twice. And on stamps several times over the years.

Personal resolution: to try not to leave it for more than 2 years before the next floral feature

All photos Keith Salvesen / Rolling Harbour; thanks to anon Pinterester for the flower part pic; and to 123RF for the stock stamp photo

YELLOW-HEADED BLACKBIRD: A NEW SPECIES FOR ABACO, BAHAMAS

October 26, 2019 by Rolling Harbour

YELLOW-HEADED BLACKBIRD: A NEW SPECIES FOR ABACO, BAHAMAS

In the aftermath of the awesome (in its original meaning) power of the hurricane, Abaco is slowly rising from the remnants of its peaceful slow-paced beauty. The loss of human life, and the damage to survivors, to animals, to property and to precious possessions is unimaginable. By way of contrast, in the UK a flood that inconveniences a SUV owner in an affluent area may well make the local paper*; and possibly local TV news if the wait for a tow-truck takes an hour or so.

BIRDS are providing some cheer and a welcome diversion for many islanders. On SocMed there are plenty of chats** going on daily about the parrots, emerging winter warblers, occasional shorebirds and so on. Feeders are back in use with seeds and nuts (nb please no peanuts). Photos are being taken, shared and enjoyed.

Over the last few days, red-winged blackbirds have been a visible and indeed audible presence in various settlements. Their characteristic ‘rusty gate-hinge’ call is unmistakeable, whether in the coppice or heard deep in the mangroves 4 miles off-shore from a skiff in the Marls. Let’s progress to a great discovery and a most perfect example of ‘birds of a feather’ literally ‘flocking together’.

YELLOW-HEADED BLACKBIRD

THE FIRST EVER SIGHTING & PHOTO ON ABACO

The photograph above was taken on October 20 in Little Harbour, Abaco by Bernard Albury. A pair of red-winged blackbirds, male and female, were on the feeder in his garden. With them was a rather more colourful blackbirdy-type bird – a juvenile yellow-headed blackbird Xanthocephalus xanthocephalus. Bernard’s photo is the perfect example of how a quick shot with a phone can make all the difference between a vague description of a bird for ID (oriole? bobolink? weird warbler?), and having clear visual clues to work with.

A NEW SPECIES REPORTED, YOU SAY? HOW CAN YOU POSSIBLY TELL?

The news of this exciting sighting quickly reached bird scientist Ancilleno Davis of (among many organisations) Birds Caribbean. ID was established, and the news soon spread via FB shares. This bird was a very long way east of its normal range, and I thought that it might possibly be a first for the entire Bahamas; probably a first for Abaco itself; and almost certainly the first photo of a YHBL. Then it was a question of cross-checking data in books such as Tony White’s comprehensive guide; online in specialist bird websites; and with the Bahamas bird experts such as Woody Bracey and author Bruce Hallett.

Tony White, [random], Bruce Hallett, Woody Bracey

SO WHAT’S THE ANSWER?

Simple. Bernard Albury has, in his own garden in Little Harbour, discovered the first Yellow-headed Blackbird ever recorded for Abaco. Furthermore, his photo is very probably the first-ever image (by which I mean only image) of a YHBL for the entire Bahamas.

BUT HOW CAN YOU TELL THERE HAVEN’T BEEN LOTS OF OTHERS?

The first step is to check an authoritative range map of the species in question. Audubon and Cornell are the go-to authorities for this purpose, though tbh there’s a great deal to be said for using Wiki as a first port of call for a new bird and its details. People rarely bother to mess with the avian articles on Wiki, there’s not a lot of fun it it. For the Yellow-headed Blackbird, the sheer distance to Abaco makes a visit from one highly unlikely. The second step is to check online sightings reports uploaded to eBird by birders ranging from the enthusiastic amateur to the vastly experienced professional. For an unusual bird, the reports are invaluable in establishing relative rarity. The previous online reports for YHBL in the Bahamas were of a couple of sightings of single birds in the Freeport / West End area of Grand Bahama. These were in 2006 by bird expert Woody Bracey; and in 2012.

Finally, cross-check in the most thorough bird guides of the area. In this case, Tony White included GB sightings YHBLs in his meticulous chart but none for Abaco. No other authority – Bruce Hallett for example – has noted a sighting report for Abaco; Woody also believes this to be a first, and he should know, having found the first ever Bahamas one in 2006.

I KNOW WHAT TO LOOK FOR NOW, WHAT DO THEY SOUND LIKE?

First, here’s the familiar call of a red-winged blackbird

Here are two examples of the much harsher call of the YHBL, described variously as “the worst song of any North American bird, a hoarse, harsh scraping”; and “an awful sounding raspy whine”.

Sample Headline* – ‘Deluge Ordeal “intolerable” says Local Financier’

Chats** – where the standard disclaimer ‘no pun intended’ would be wrong

CREDITS: First and foremost to Bernard Albury, but for whom… and Ancilleno Davis for his ID and initial shares; generally: Audubon, Cornell, eBird, Merlin, Xeno-Canto, Bird guys.

Images: R. Welker, Alan Vernon, Birdorable (cartoon), Bernard Albury, Tom Kerner, Sibley’s Guide online; Dan Hackley / Cornell / eBird, JJ Audubon, Brian Sullivan / Cornell / Macaulay Library

Sounds: Jim Berry, Xeno-Canto; Ted Floyd, Xeno-Canto

SOME NICE PICS OF BAHAMAS WILDLIFE… WHILE TECHIES LABOUR

October 22, 2019 by Rolling Harbour

SOME NICE PICS OF BAHAMAS WILDLIFE…

WHILE TECHIES LABOUR

Western Spindalis, Abaco Bahamas (Keith Salvesen)

I’m never quite sure how far it’s permissible to go beyond ‘really pissed off’ about a tech problem. Anything much stronger seems a bit indulgent both in itself and especially when measured against the far-reaching despair experienced by many in far more important areas of life.

I am just having a huge “Grrrrrrrrr” moment because my complex blog menu, with 3 rows of headings and carefully curated nests of drop-downs under each, has been scrubbed by persons or AI unknown. It’s several years of cumulative and (mostly) pleasurable organisational work up the spout.

As a Brit, may I be permitted to say ‘bother’. Or maybe ‘Dash it all?’ Or declare that I’m a mite cheesed orf? To which a fair response would be “it’s just a trivial inconvenience, get over it…”

For the moment, here are some nice pics to enjoy, all taken on Abaco. I’m happy to say that right now, 7 weeks since Dorian, there are promising signs that in some areas of Abaco, the birds are starting to show themselves – including a few winter warblers. See you the other side of rethinking my Menu…

Western Spindalis, Abaco Bahamas (Keith Salvesen)

Credits: Nina Henry, Bruce Hallett, Mary Kay Beach, Craig Nash, Keith Salvesen / Rolling Harbour, Charlotte Dunn / BMMRO (western spindalis badge, moi)

WTF? (WHAT’S THAT FISH?): THE FROGFISH

October 18, 2019 by Rolling Harbour

The Astoundingly 5* Strange Frogfish (Adam Rees / Scuba Works)

WTF? (WHAT’S THAT FISH?)

A COMPENDIUM OF SUBSURFACE WEIRDNESS

A SERIES OF 15 OF THE STRANGEST SEA CREATURES IN BAHAMAS WATERS

INTRODUCTION

WTF? stands for ‘What’s That Fish’? But it might also be your exclamation when you come across one of these creatures. The WTF? series highlights some of the unusual, curious, weird and downright extraordinary fishes that inhabit the waters of the northern Bahamas. Some represent local forms of a species found elsewhere in the world; others are in their own evolutionary cul-de-sac. Just as I think I have seen it all, so another oddity crops up somewhere that demands inclusion.

The WTF? series, put together over several years, is intended to be the most direct route to an underwater menagerie of piscine strangeness, with some great photos to whet your appetite to learn more about these fascinating denizens of the ocean.

1. THE FROGFISH

* CLICK ON THIS TITLE TO BE TRANSPORTED TO THE STRANGE WORLD OF THE FROGFISH *

Frogfish (Adam Rees, Scuba Works) Credits are given in the individual articles. Thanks to all those that have provide the photos, without which this type of illustrated, unscientifically scientific poke around in the ocean depths would not be possible.

“THE BIRDS OF ABACO”: BOOKMAKERS (& GAMBLERS?)

October 15, 2019 by Rolling Harbour

“THE BIRDS OF ABACO”: BOOKMAKERS (& GAMBLERS?)

THE DELPHI CLUB GUIDE TO THE BIRDS OF ABACO

163 SPECIES, 350+ PHOTOS, 30 PHOTOGRAPHERS, 272 PAGES

Black-necked Stilt, Abaco Bahamas (Alex Hughes)

Black-necked Stilt – Alex Hughes

THE POST DORIAN PLANS

It is a truth universally acknowledged that, until 1 September 2019 when Dorian struck, Abaco was a prime birding location in the Bahamas archipelago, an island chain that stretches from the lower reaches of the temperate zone to the more exotic sub-tropical region. The judgement for ‘best birding location’ is both objective and subjective, and the criteria are flexible. However on any view Abaco scores highly in all avian categories: resident species, endemics, migratory birds, speciality species, vulnerable species, and extreme rarities.

We’ll have to wait some time before it is possible to tell what effects the devastating storm has had on the wildlife of the island and on its birding credentials…

Blue-gray Gnatcatcher vocalizing. Abaco Bahamas (Tom Sheley)

Blue-gray Gnatcatcher – Tom Sheley

BOOKMAKING

The Delphi Club Guide to THE BIRDS OF ABACO was published in March 2014. To say “I wrote it” would be a gross distortion of the truth: it was an entirely collaborative project. The originator of the idea – as with the entire Delphi Club project (now in new & expert hands) – was Peter Mantle. The book showcases the work of 30 photographers, including some outstanding contributions by islanders. There was huge input from the very experienced project manager (= Mrs RH, then of YUP) and from the top Bahamas bird experts – Woody Bracey, Tony White, Bruce Hallett, and Tony Hepburn, to name but 4. So although my name is on the cover, it is as a participant representing the contributions, camera skills and brainpower of many people.

Cuban Emerald (f) Gilpin, Abaco Bahamas (Keith Salvesen)

Cuban Emerald (f) – Keith Salvesen

GAMBLERS?

The book project was something of a gamble. When planning began, social media – and the facility to reach a wide audience – was significantly less active than it was soon to become. The book was launched at Delphi to generous enthusiasm and support both on Abaco and beyond, but the extent of the interest (and sales) that might be generated more widely was unknown. We predicted it might be a slow-grower, so we were astonished by the immediate positive response to the guide. Perhaps it helped that there was a wider purpose to the book than as a photographic showcase for Abaco’s rich birdlife – we donated copies to all Abaco schools, colleges, libraries and local wildlife organisations for educational purposes. A significant percentage of the profits was set aside for local wildlife causes and duly distributed.

Moving on just 5 years to this summer, the limited edition of 500 had all but sold out; and around 100 free copies had been donated – or deposited (as required by UK Law) in specified institutions: British Library; National Library of Scotland; National Library of Wales; Bodleian Library, Oxford; University Library, Cambridge; and Library of Trinity College, Dublin.

Brown Pelican, Abaco Bahamas (Tom Sheley)

Brown Pelican – Tom Sheley

PRESENT FOR THE FUTURE?

Six weeks after Dorian, a semblance of normality is returning to the stricken island. Daily snippets of optimism are of great significance: a lost pet found after many days; a trashed plant defiantly putting out a flower; a pair of parrots screeching past; a boat recovered; a building slightly less damaged than feared. Recovered possessions from flooded houses have brought mixed emotions – heart-rending losses of precious items, yet also the unexpected recovery of possessions believed lost or destroyed. And in that context but far less emotionally, I have now had quite a few requests for replacement copies of “Birds of Abaco”.

Short-billed Dowitcher, Abaco (Bruce Hallett)

Short-billed dowitchers – Bruce Hallett

SO, ARE THERE ANY REPLACEMENT BIRD BOOKS LEFT?

The position in a conch-shell is this:

There are now no copies still available on Abaco. Former HQ (and book storage / fulfilment facility) The Delphi Cub changed hands a year ago, and no longer carries a stock of the books.
In the UK, Peter Mantle and I have about a dozen between us that are, in one way or another, ring-fenced.
That’s it, I’m afraid.

Bridled Tern, Abaco Bahamas (Bruce Hallett)

Bridled Tern – Bruce Hallett

ARE YOU PLANNING TO REPRINT?

For several reasons, no – it’s not a viable proposition. Specifically:

the size & print-costs of such a large heavy (2 kgs) book
the specialist printing (eg in Italy) needed to retain the quality; and the associated shipping costs
the lack of any viable storage and / or fulfilment facilities on Abaco, or anywhere else suitable
the lack of a prominent ornithologically-minded literary-leaning benefactor with a kind smile & deep pockets

Black-throated blue warbler – Gerlinde Taurer

CAN I STILL GET THE BOOK IN SOME OTHER FORM?

Yes! I hope. We are kicking around the following ideas in a general and inchoate way:

first, avoiding any system requiring storage or fulfilment (so, not a physical reprint)
using existing production material to create a Print-on-Demand book
turning the guide into an eBook (may be difficult / impossible with non-standard format)
most likely producing a full PDF (or similar) version for download and possibly printing
selecting sections – eg the definitive checklist – as individual downloads
considering other suggestions!

At the moment this is in the basket marked ‘non-urgent’, but the alternatives will be under active consideration.

Clapper Rail – Tom Sheley

The original flyer for the book "Birds of Abaco" flyer

Painted Bunting Tom Sheley

Photos: Alex Hughes (1); Tom Sheley (2, 4, 9, 10); Keith Salvesen (3, 11); Bruce Hallett (5, 7); Gerlinde Taurer (8); Charmaine Albury, para-breakers

Cuban Pewee Keith Salvesen