WHEN A BIG BILL JUST MAKES YOU SMILE… WILSON’S SNIPE ON ABACO


Wilson's Snipe (Birds Caribbean)

WHEN A BIG BILL JUST MAKES YOU SMILE… WILSON’S SNIPE ON ABACO

Wilson’s snipe Gallinago delicata is a plump little bird that is classified as a shorebird. But unlike some, it is not confined to the shore and immediate hinterland – marshland or brackish pond regions are also favoured habitats. Until recently (2003) the Wilson’s was treated as a subspecies of the widespread Common Snipe, before being accorded its own species-status. Something to do with white on the wing edges and a couple more tail feathers. If you want to know who Mr Wilson was (who also ‘owns’ other birds such as a plover and a phalarope) you can find out HERE.

A Wilson’s Snipe on Abaco (but not on the shore…)WILSON'S SNIPE, Abaco (Charles Skinner)WILSON'S SNIPE, Abaco (Charles Skinner)     WILSON'S SNIPE, Abaco (Charles Skinner)

The snipe, in common with several species such as the woodcock, willet and dowitcher, has a notably long bill. The header image is one of the best I have come across that clearly illustrate it, and comes from the extensive archive of the excellent BIRDS CARIBBEAN. The naturalist concerned noted “…check out this remarkable bill. If you have not held a shorebird like this in your hand, the bill is pliable, flexible, and innervated. The snipe feels its way through the muck and then plucks the worm out like tweezers”.

SNIPES AND SNIPERS

The snipe has the misfortune to be a game bird. In the c19, its populations began to reduce due to habitat destruction – especially the draining of marshland – to which it is still vulnerable, of course. But more serious was its increasing popularity with hunters as a difficult bird to shoot, with its fast, jagging flight. A hunter skilled enough to shoot snipe successfully became known as a “sniper”, a usage coined some 200 years ago. I imagine the verb ‘to snipe (at)’  a person derives from this usage, meaning to fire off a quick, accurate, possibly hurtful remark.

Despite these drawbacks, there are enough snipe for the species to remain IUCN-listed ‘least concern’. In the Bahamas, they can be hunted between autumn and spring. This is the relevant page from the BNT HUNTERS’ GUIDE 

Wilson's Snipe BNT Hunters' Guide jpg

800px-Wilsons_Snipe_Richmond_BC Alan D. Wilson

WILL I SEE WISNs ON ABACO?

Although the Wilson’s snipe is one of the most widespread shorebirds in North America, they are far less readily found on Abaco. For a start, they are migratory in the Bahamas, and only resident in winter (broadly, October to March), their non-breeding season. So don’t expect to find them during your pleasant stay in June.  Secondly, they are classed as ‘rare’, one grade harder to find than ‘uncommon’. Thirdly, they are shy and well-camouflaged. Unless they choose to be out in the open – foraging in water, or maybe standing on a post – they can be very hard to see. And in winter it seems they tend to hunker down more and fly less than in the breeding season. Maybe they show more in summer because they know it’s the closed season for hunting… Compare the next two images, one taken on Abaco in winter, and one (cheers, Wiki) elsewhere in the summer.

A winter snipe on Abaco – shy, retiring and blending in with its surroundingsWilson's Snipe, Abaco (Woody Bracey)

Wilson’s snipe in summer, confidently on a post in summer (closed season for hunters…)800px-Common_snipe_fencepost (Sean Breazeal)

DO SNIPES HAVE A DISTINCTIVE CALL THAT I WILL INSTANTLY RECOGNISE?

Not really, I’m afraid. Not easy for an amateur (me). They have a variety of vocalisations – calls, flight calls, and songs. They also make a sound called ‘winnowing’ with their tails while in flight. Here are a few short examples.

CALL / SONG Harry Lehto Xeno Canto

CALL /SONG Pasi Pirinen Xeno Canto

CALL Richard E Webster Xeno Canto

FLIGHT CALL Paul Marvin Xeno Canto

Now that the wonderful Crossley Guide ID bird images are available ‘open source’, I shall be including them in future species posts. When I remember. Their advantage is that in one image you can see all aspects of a paricular species – gender, breeding plumage, typical ‘poses’, in flight and so forth. A truly great resource for bird identification.Wilson's_Snipe_from_The_Crossley_ID_Guide_Eastern_Birds

Credits: Birds Caribbean, Charles Skinner x 3, BNT, Alan D. Wilson, Woody Bracey, Sean Breazeal, Xeno Canto, Crossley ID Guides, Wiki, Audubon, Cornell and sundry worthy OK sources…

FORAYS WITH MORAYS (3): LET’S GO GREEN…


Green Moray Eel with Soldierfish (Melinda Riger @ G B Scuba)

FORAYS WITH MORAYS (3): LET’S GO GREEN…

A short while back I posted about SPOTTED MORAYS, which people seem to enjoy. It generated requests for more forays, specifically with green morays. I gotcha – here they are, as promised… All the eels shown below, familiar to the divers who regularly encounter them and given names such as “Judy’ and “Wasabi” (my favourite), were photographed by Scuba expert Melinda Riger, whose skills with a camera are well-known. Let’s go Green…

Like all moray species, Greens like to lurk in convenient hiding places to watch the underwater world – and possible prey – go by. Here are some typical ‘lurking’ shots.Moray Eel, Green, with lunch (eel) emerging from gill ©Melinda Riger @ Grand Bahama Scuba Green Moray Eel ©Melinda Riger @ GB Scuba copy

Green Moray Eel (Judy) ©Melinda Riger @ G B Scuba Moray Eel, Green (Wasabi) ©Melinda Riger @ GB Scuba Green Moray Eel ©Melinda Riger @ GB Scuba

Green morays also have the unusual breathing apparatus that resemble nasal plugsGreen Moray Eel Melinda Riger @ G B ScubaGreen Moray Eel ©Melinda Riger @ Grand Bahama Scuba

Those who recall the spotted moray post and their singular dentition arrangements that included a long sharp tooth sticking down from the upper jaw will no doubt be thinking, “are we going be shown any dental close-ups?” But of course… why would I not?

Note the cluster of teeth in the upper jaw, differing from the spotted morayMoray Eel (Yellow) Judy ©Melinda Riger @ G B Scuba

Grrrrrrrrrrrrrrr…….Moray Eel, green ©Melinda Riger @ G B Scuba

All photos: Melinda Riger, Grand Bahama Scuba

SHARING SHEARWATER SEASHORE SHOCK ON ABACO…


Great_Shearwater_RWDz9 Dick DanielsSHARING SHEARWATER SEASHORE SHOCK ON ABACO…

I return reluctantly to the “Great Shearwater” phenomenon to give, I hope, closure to the topic for this season and with luck for several years to come. A great many people have engaged with the debate about the large number unfortunate birds found either dead or dying in the water or (especially) on the beaches of Abaco and beyond. You can see the original post, a tabulation and map based on the reports I received or came across, and the views of the experts HERE

This occurrence appears to have declined considerably from its peak last week, presumably because the migration has moved rapidly northwards. Already, reports from the eastern US Atlantic coast (e.g. Cape May) of a great shearwater influx are coming in, so we must hope that the attrition rate in the Northern Bahamas has stopped, or will stop within the next few days. This is evidenced by this FB clip from Tom Reed, a photographic contributor to THE BIRDS OF ABACO

TR clip

The ABA (American Birding Association) has taken an interest in the problem on Abaco, and reported the incidence of shearwater die-off HERE. For the sake of completeness, I have updated reports I have received or found over the last few days below, together with an updated distribution map. More sad images are included because, pitiful though they are, photographs are of real assistance in the study of migratory die-off. For example, it is likely that juvenile birds are more likely to be affected by exhaustion in the course of their 10,000 mile journey than adults. Photos enable an assessment of the age of the birds to be made.

Exhausted shearwater, Delphi beach. Is this a juvenile, less able to make a huge journey than an adult?Great Shearwater, Delphi, Abaco (Sharon Elliott)The yellow tip to this bird’s beak shows that it is a different species of shearwater, the Cory’s.  Like the Greats, these birds are also rare transients on Abaco, and also make long-distance migrations. A Cory’s was photographed a couple of weeks ago swimming happily off the Delphi beach. This one has obviously run out of stamina. It has the chance to recover, but it is vulnerable in this state; and turkey vultures are quick to move in on fatalities…

 UPDATED REPORTS (SINCE JUNE 24) IN RED
  • Delphi Club Beach – 20 plus + 1
  • Schooner Bay – 5
  • Bahama Palm Shores – ‘many many’ dead birds washed up on the shore
  • Casuarina Beach – 1
  • Cherokee (Watching Bay) – 3 or 4
  • Cherokee (Winding Bay) – 4
  • Little Harbour – 3
  • Marsh Harbour area – about 5
  • Great Guana Cay, southern end   – 1 (possibly a gull)
  • Tilloo Cay – 13 at least on Junk Beach, more than ever seen (see photos below)
  • Elbow Cay – 2 + 1 Atlantic side beach near Abaco Inn
  • Elbow Cay – 2, North End
  • Green Turtle Cay beach – 2
  • Green Turtle Cay, offshore – “a lot in the water”
  • Man-o-War Cay – 1 by the roadside
  • Ocean 20m from HT Lighthouse – 2 in the sea

also Exuma Sound (5 birds), Shroud Cay Exuma (gull?”), Briland Beach,Harbour Island Eleuthera (“some” + 4) , and Church Bay, South Eleuthera – 10 + 2

Ellen Bentz, who reported the Church Bay birds, has frozen 3 of them for research purposes; it will be extremely interesting to see what results from their examination, from the ages of the birds to condition to likely cause of death. She also took photographs to aid species identification and diagnostic efforts.

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Abaco distribution map. Earlier reports marked in green, two new sites in blue
Shearwater Map, Abaco update

Here is the wonderful Crossley ID guide tableau of great shearwaters, showing every facet of the birdGreat_Shearwater_from_the_Crossley_ID_Guide_Britain_and_Ireland
WHERE DO THESE BIRDS COME FROM & WHERE DO THEY GO?
Sean Giery of the excellent ABACO SCIENTIST has also commented on the recent phenomenon, concluding “…if you haven’t looked up Gough Island, the probable origin of these Greater Shearwaters, do. Use Google Maps to get an impression of how far these amazing birds travel. It’s truly amazing.” By great good fortune, I’ve done the legwork for you… Let’s take a closer look.
Great shearwaters breed almost exclusively the small area of the globe that includes the Gough Islands, Tristan da Cunha and a few lesser-known islands in that area. There is also a small breeding population in the Falklands. Whichever, they are not so very far from Antarctica. Their range, however, is massive and involves long migrations over the Atlantic ocean to the far north – as far as the Arctic – and back each year.
gtshearmap
 And, as the shearwater flies, this is the distance from the breeding grounds to Abaco; 2/3 of their total journey. Now, factor in a first-season juvenile shearwater facing the vagaries of food supply, weather conditions and stamina… The fact that some die-off occurs every few years at some stage of the migration becomes less surprising.
Gough Island to Abaco 6300 milesGough Island to Abaco jpg
I’ll conclude with a photo of a great shearwater flying ‘at the shear’, which I am certain is how best we’d like to think of these wonderful seabirds…
Great_Shearwater_RWD3b Dick Daniels
Credits: to the 30 or so people credited in the original post I add with thanks Molly Kemmer Roberts, Susan Drwal, Sharon Elliott, Ellen Bentz, Dick Daniels and open source maps chaps.

GREATER ANTILLEAN BULLFINCH: ABACO’S “POLICE BIRD”


Greater Antillean Bullfinch, Abaco (Erik Gauger)

GREATER ANTILLEAN BULLFINCH: ABACO’S “POLICE BIRD”

Following my last gloomy post about the widely-reported die-off of the poor, exhausted migratory great shearwaters, let’s turn with relief to a cheerful bird known to all and admired in coppice and garden: the Greater Antillean Bullfinch Loxigilla violacea. These pretty birds are easy to find and to identify. They love feeders, and they are responsive to ‘pishing’, that irritating (?) noise that birders make to unseen avians in the coppice to persuade them to reveal themselves. Adult males are black with bright red accessories (hence “police bird”); females are paler with orangey accessories; and juveniles look a bit scruffy and patchy. Here’s a GAB gallery to enjoy.

Greater Antillean Bullfinch, Abaco (Alex Hughes) 4 Greater Antillean Bullfinch, Abaco (Alex Hughes) 5Greater Antillean Bullfinch immature with snail 2.Delphi Club.Abaco (Tom Sheley)Greater Antillean Bullfinch, Abaco (Keith Salvesen)Great Antillean Bullfinch, Abaco  (Tom Sheley) 1Great Antillean Bullfinch, Abaco (Charles Skinner)Great Antillean Bullfinch, Abaco (Gerlinde Taurer)GAB BH IMG_9208 copy 2

Credits: Erik Gauger (1); Alex Hughes (2, 3); Tom Sheley (4, 6); Keith Salvesen (5); Charles Skinner (7); Gerlinde Taurer (8); Bruce Hallett (9)

 

SHEARWATERS ON ABACO: SAD TALES FROM THE SEA


GREAT SHEARWATER Puffinus gravis (Patrick Coin Wiki)

SHEARWATERS ON ABACO: SAD TALES FROM THE SEA

We do not generally do sad or sombre at Rolling Harbour. It’s a beautiful and happy place, and the Delphi Club is a haven of good fellowship and good craic (stemming no doubt from its Irish connections). But I have to report on a sad occurrence on the beach at Delphi and, as it turns out, at many other Abaco locations (and beyond) during June – a notable number of shearwaters being found dying or dead on beaches or else in the sea, their bodies in due course being washed in on the tide.

There are quite a few species of shearwater worldwide, of which 5 are recorded for Abaco. The only permanent breeding resident is the Audubon’s Shearwater, a bird that is quite commonly seen out at sea though not, I imagine, on land. We never managed to obtain a photo of one for “The Birds of Abaco”. I presume there are breeding colonies on Abaco, but not that I have heard about.

Shearwater Checklist, Abaco

As the checklist above shows, three of the other shearwaters are rare transients. These birds fly long migration routes over the ocean and so the casual birder is in practice unlikely to encounter one, let alone get a photograph. The Manx can be ignored as an aberration – the V5 means that one or two vagrant individuals have been recorded since (say) 1950. Great Shearwater Puffinus gravis - Patrick Coin Wiki

My first inkling that something unusual was occurring came a week ago from a FB post by Melissa Maura, whose wonderful parrot and flamingo photos feature elsewhere in these pages. She said …on my rugged Abaco ocean beach last week, were many dead magnificent seabirds – greater shearwaters (about 5) and a couple of Frigate birds… They didn’t appear to wash in on the waves, but appeared to have perished perhaps from exhaustion on the beach”.  Various later comments suggested that this phenomenon had been noted periodically in the past, the last time 4 or 5 years ago. 

Great Shearwater (dec'), Abaco (Melissa Maura)

This was followed a couple of days later by evidence from well-known birding maestro Woody Bracey that living great shearwaters were in Abaco waters, perhaps confirming that they are in mid-migration at the moment. The one in #2 was “caught” 3 miles off Great Guana Cay.

Great Shearwater Abaco (Woody Bracey)Great Shearwater, Abaco boated (Woody Bracey)

Then a couple of days ago Jane Mantle emailed me with photos of some dead birds on the beach at Delphi saying that half- dead birds are washing up on the beach ‘only for the vultures to finish off’.  We must have over 20 with more to come”. I circulated these to the ‘usual suspects’ for ID and comment.

Great Shearwater, Abaco (dec'd) (Jane Mantle)Great Shearwater, Abaco (dec'd) (Jane Mantle)

I also posted the photos on my RH FB to see if others had seen anything similar. Many thanks to all those who ‘liked’, shared or commented on the post. Here is a summary of the responses, from which a pretty clear picture emerges of widespread recent shearwater deaths on Abaco mainland and Cays.

  • Delphi Club Beach – 20 plus
  • Bahama Palm Shores – ‘many many’ dead birds washed up on the shore
  • Casuarina Beach – 1
  • Cherokee (Watching Bay) – 3 or 4
  • Cherokee (Winding Bay) – 4
  • Marsh Harbour area – about 5
  • Great Guana Cay, southern end   – 1 (possibly a gull)
  • Tilloo Cay – 13 at least on Junk Beach, more than ever seen (see photos below)
  • Elbow Cay – 2 + 1 Atlantic side beach near Abaco Inn
  • Elbow Cay – 2, North End
  • Green Turtle Cay beach – 2
  • Green Turtle Cay, offshore – “a lot in the water”
  • Man-o-War Cay – 1 by the roadside
  • Ocean 20m from HT Lighthouse – 2 in the sea

also Exuma Sound (5 birds), Briland Beach Harbour Island (“some”) and Shroud Cay (gull?”)

SIGHTINGS MAP, ABACO AS AT 09.00 JUNE 25 (2X click to enlarge)
Shearwater Map, Abaco

Shearwaters at Tilloo Cay (Janie Thompson)

Great Shearwater (dec'd) Tilloo Cay Abaco988563_780040245445527_87776362163085216_n10429826_780040222112196_5624095942981629125_n

Shearwaters on Elbow Cay (Rudolf Verspoor)

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WHAT SORT OF SHEARWATERS ARE THESE?

In the main it looks and sounds as though these are migrating great shearwaters. Woody Bracey has identified several dead birds as ‘greats’ from photos, and one as an alive Cory’s shearwater swimming in the sea off the Delphi Beach. ID is not easy, and a few of the birds found may be gulls. It’s possible that there are some Audubon’s shearwaters among the stricken birds, although since they are resident to Abaco that would go against the theory of an exhausted migratory species that has been blown of course en masse.

Great Shearwater Puffinus gravis (JJ Harrison Wiki)

WHAT DO THE EXPERTS THINK?

There are a few obvious contenders for the solution to the riddle of the shearwaters, ranging from the frontrunner migration exhaustion to disease and trash ingestion. The evidence of mass deaths over a wide geographical area during a short time probably rules out trash ingestion – although I’m sure the poor creatures must have plenty of plastic bits inside them. Mass disease striking suddenly over one area is seems unlikely. Once those two possibilities are ruled out, the primary cause, covering most instances of the sad and upsetting phenomenon, becomes clearer.

Lynn Gape of BNT posted the view of William Mackin, a seabird biologist who looked at some of the photos and wrote “The five birds look like greater shearwaters. They breed at Gough Island in the South Atlantic. The young begin life by flying 10000 miles to Newfoundland in the North Atlantic. Some do not make it. They wash up on eastern US and Bahamian beaches. It is sad. We should monitor the numbers. The frequency is variable but possibly increasing.”

Tony White, the omniscient Recorder of Bahamas Birds and compiler of the comprehensive and authoritative checklist for the area, writes: 

“The dead birds on the beach (and in the water) is a phenomenon that happens every five to ten years. According to the late Dave Lee these are young Great Shearwaters migrating from their natal home in the South Atlantic to their feeding grounds off the US and Canada, Combination of poor food supply and wind conditions in the doldrums lead to their expending all their energy and expiring. It is a normal event for this species and has been recorded many times The Great Shearwater population appears to weather the bad years and do well in the good years. Relevant articles are: Lee, D.S. 2009. Mass die-offs of Greater Shearwater in the Western North Atlantic: Effects of weather patterns on mortality of a trans-equatorial migrant. Chat 73(2):37; Seabird Ecological Assessment Network. 2007. Greater Shearwater Die-off in the Atlantic: June-July 2007. Volunteer Newsletter 3(2):2; and Watson, George. 1970. A Shearwater Mortality on the Atlantic Coast.  Atlantic Naturalist 25(2):75-80.

Woody Bracey has now left an informative and perceptive comment: “It’s amazing how far(10,000 miles) these young birds have to travel to their feeding grounds so soon after being fledged. Breeding colonies are on isolated subantarctic islands of the southern hemisphere. Breeding begins in October. Incubation of the single egg lasts 55 days and it is another 105 days until the chick is ready to fly. Each loss of a bird represents much time and effort of a pair to produce a single chick which then has to fly the gauntlet through the windless, often foodless doldrums to reach its northern feeding grounds. So many hazards, so few birds! It’s sad to witness these die-offs but the species still survives. Global warming cannot be helping this species on its journey to the colder, nutrient rich more northern briny destinatioin. Lets stop setting our dumps and forests on fire here in the Abacos. Eventually it will not only affect the Great Shearwaters but us as well”.

I should add that it is reassuring to be able to confirm that, at least at present, the great shearwater is IUCN-listed “Least Concern”

Status_iucn3.1_LC.svg

Great Shearwater in flight (Hardaker)

Tony has asked for all available information Bahamas-wide: “It would be very useful if someone could collect some hard data on the die-off, e.g. when was it first noted and how many birds are found along a given stretch of beach? Check for other species and take a few wings as samples of the desiccated birds. In past events the number of dead birds was much greater on Crooked and Acklin Islands than Abaco. Eleuthera too should be checked if possible”.

Lynn has also asked “Please photograph and count birds found on your beaches and send images and the number counted to me at lgape@bnt.bs. We will send on to William Mackin and Tony White who are keeping records of these occurrences The image with this post is a Greater Shearwater in flight…” (see above, as we would all like to think of these magnificent birds)

Or by all means contact me at rollingharbour.delphi@gmail.com and I’ll pass on any info

STOP PRESS An update to this post written the following week, detailing new sightings and reporting the passing of a sad fortnight of shearwater fatalities in the Bahamas, can be found HERE

A happier great shearwater image to leave you with…
Great Shearwater (Dick Daniels, Wiki)
Credits and thanks to Woody Bracey, Melissa Maura, Lynn Gape, Jane Mantle, William Mackin, Patrick Coin, J J Harrison, Dick Daniels, Norvell Slezycki, Lory Kenyon, Selah Vie, Lindsey Delaphine McCoy, Turtle Cove Tilloo, Janie Thompson, Rudolf Verspoor, Laurie Schreiner, Caroline Woodson Sawyer, Steph Russell, Ashley L. Albury, Dwayne Wallas, Sully Vincent T Sullivan, Ben Albury, Abaco Bulletin, Carol Rivard Roberts, Jason McIntosh, Dale Sawyer, Barbara Trimmer, Dominique Allen, Jessica Aitken and Juana Rudzki, with apologies to anyone else who has slipped through the net…

WTF? (WHAT’S THAT FISH?) (5): THE FROGFISH


Frogfish (Adam Rees, Scuba Works)

WTF? (WHAT’S THAT FISH?) (5): THE FROGFISH

This ‘WTF?’ series started with a relatively conventional species, the REMORA. It has been getting progressively more bizarre. We moved onto an omnium gatherum of WEIRDO FISHES, then the remarkable LETTUCE SEA SLUG, and most recently the BATFISH. Time to ramp up the stakes: with many thanks to scuba expert Adam Rees for use permission for his terrific photos, I present… the FROGFISH.

Frogfish (Adam Rees, Scuba Works)

The frogfish is a kind of anglerfish found in almost all tropical and subtropical oceans and seas. There are about 50 different species worldwide, covering an astonishing range of strange appearances. They generally live on the sea floor around coral or rock reefs. In size they vary from tiny to about 15 inches long – although ‘long’ is a flexible concept because they are to an extent shape-changers in height and width.Frogfish (Adam Rees Scuba Works)

FROGFISH SUPERPOWERS YOU MAY WISH TO HAVE

  • INVISIBILITY CLOAK . Frogfish are masters of disguise and camouflage. This enables them to catch their prey with minimal effort and also to avoid predators. Their camouflage methods – broadly known as ‘aggressive mimicry’ – include
    • Ability to change colour for days or even weeks to mimic their surroundings
    • Getting covered in algae and other organic matter that matches their habitat or
    • Looking inherently like a plump rock or in some cases, plant

Fear for the life of the spider crabFrogfish (Adam Rees, Scuba Works)

  • IRRESISTIBLE ATTRACTION (just like that nice Mr Grey)
    • A sort of frontal dorsal fin called an illicium to which is attached a
    • Lure called an esca which may mimic a worm, shrimp or small fish etc and which is
    • Retractable in many species and
    • Regenerates if it gets mislaid

The ‘dollop of cream’ thing is the esca. Note the characteristic large mouthFrogfish (Adam Rees, Scuba Works)

Spot the escaFrogfish (wiki)

  • BUOYANCY CONTROL & SHAPE-SHIFTING
    • Most frogfish have a ‘gas bladder’ to control their buoyancy.
    • Some species can change shape or even inflate themselves by sucking in quantities of water in a so-called defensive ‘threat display’.

frogfish-black

Frogfish (Adam Rees Scuba Works) Frogfish (Adam Rees Scuba Works)

HOW DO FROGFISH REPRODUCE? 

Although not conventionally attractive creatures, frogfish clearly manage to reproduce. Little is known about the techniques in the wild, but one is probably ‘with care’, especially for a male frogfish who may not survive for long if he hangs around after fertilisation has taken place. It has been noted that females tend to select far smaller males to fertilise their huge numbers of eggs, perhaps for that very reason.

Frogfish (Adam Rees, Scuba Works)

FROGFISH FEEDING SKILLS – GOOD OR BAD?

When deploying the lure, potential prey that comes too close to that wide mouth stands no chance. A frogfish will strike in a fraction of a second. Frogfishes have voracious appetites for crustaceans, other fish, and even each other. I can do no better than borrow this vivid description of a feeding frogfish:

“When potential prey is first spotted, the frogfish follows it with its eyes. Then, when it approaches within roughly seven body-lengths, the frogfish begins to move its illicium in such a way that the esca mimics the motions of the animal it resembles. As the prey approaches, the frogfish slowly moves to prepare for its attack; sometimes this involves approaching the prey or “stalking” while sometimes it is simply adjusting its mouth angle. The catch itself is made by the sudden opening of the jaws, which enlarges the volume of the mouth cavity up to twelve-fold, pulling the prey into the mouth along with water. The attack can be as fast as 6 milliseconds. The water flows out through the gills, while the prey is swallowed and the oesophagus closed with a special muscle to keep the victim from escaping. In addition to expanding their mouths, frogfish can also expand their stomachs to swallow animals up to twice their size.

images

HOW DO FROGFISHES GET AROUND? SWIM? WALK? CRAWL?

Frogfishes do not in fact move around a great deal. Using their camo advantages, they prefer to lie on the sea floor and wait for prey to come to them. As mentioned in the quote above, they may slowly approach prey using their pectoral and pelvic fins to “walk” along the sea bottom. They can swim using their tail fin (or in some species by simple ‘jet propulsion’ by forcing water out of their gills) but rarely do so – they don’t feed on the move, and they are adapted to the sea floor environment where they food is readily available. However their “walking” ability is limited to short distances.

frogfish-anglerfisch

DO FROGFISH HAVE OTHER COLOUR SCHEMES?

Indeed they do. In stark contrast to the camo species, some frogfishes are highlighter bright. Here are two of my favourite photos by Adam that show this clearly. I’ve no idea if these are a male and female. I suspect they are different species. I think the brown one is a striated frogfish and the other is… a yellow frogfish. Some people keep these creatures in  aquaria, but apparently it is impossible to sex them, and they have to be kept on their own for everyone’s peace of mind…

Frogfish (Adam Rees Scuba Works) Frogfish (Adam Rees Scuba Works)

FROGFISH INFOGRAPHICS

frogfishFrogfish Infographic 'Monsters of the Deep'

FROGFISH VIDEOS

These two videos, from Lester Knutsen and Daan Van Wijk respectively, show some of the characteristics I have written about above. Both are short and both are fascinating.

To read more about frogfishes and for some fabulous photos I highly recommend the website FROGFISH.CH You can reach the main page(s) but the link seem to be broken so I have not been able to contact Teresa Zubi, whose site it is. She clearly has a sense of humour and uses a neat pair of gifs which I hope she won’t mind my using…

Credits: All main photos, Adam Rees  of Scuba Works with many thanks; wiki for ‘spot the esca’, red quote & basic info; videos Lester Knutsen & Daan Van Wijk; Teresa Zubi for website & gifs; infographics, authors u/k

Frogfish Tee Shirt

SIGNS OF GOOD BREEDING: PIPING PLOVERS IN SUMMER


Piping Plover Charadrius melodus (Ontario, MDF / wiki)

SIGNS OF GOOD BREEDING: PIPING PLOVERS IN SUMMER

No apologies for writing again about Piping Plovers. This rare bird – only 8000 left in the world – overwinters in Florida, on the Gulf Coast, and to a notable extent in the Bahamas, very possibly on a beach near you. The peacefulness and cleanliness of Abaco’s pristine beaches provide the ideal habitat for the little PIPL to live safe and healthy lives during the winter, in preparation for their return to their summer breeding grounds. And breeding is what they are doing right now, up north. There are breeding populations on the Atlantic Coast, the Great Plains, and the Great Lakes. So I thought I’d feature a few images of what appears to be a rather successful season so far…

One of the best bird blogs around, one that I have recommended before, is called READINGS FROM THE NORTHSIDE. It is written in an informative yet witty style illustrated with excellent photos, and chronicles the daily avian goings-on on Long Beach Island NJ, an important nesting area for piping plovers. There are links with Todd Pover and Stephanie Egger, two scientists from the Conserve Wildlife Foundation of NJ who will be familiar to many Abaconians for the winter work they do with the plovers on Abaco. The photos below have almost all been taken this month as the PIPL chicks hatch and begin to find their feet in a big world.

Piping Plover LBI 1   Piping Plover LBI 2 piping-plover-chick-sneaking-through-dune piping-plover-sit-in-dune

NEWLY HATCHED (TUFTERS’ & TACEY’S 4th CHICK, AMY) piping-plover-wet-chick1

TIDYING THE EGGSHELLpiping-plover-with-eggshell

EGGSHELL REMOVALpiping-plover-remove-eggshell-nest

HAPPY FAMILIES…piping-plover-chick-leaves-nest

MORE HAPPY FAMILIES IMG_0853 IMG_0856 IMG_0855 IMG_0854

BARNEGAT LIGHTHOUSE WITH PIPL IN THE FOREGROUND!IMG_0857

Most regrettably, you’ll never see a Piping Plover chick on Abaco. The adult birds have left the Bahamian beaches and flown north before their breeding season begins. These little creatures are both rare and special at both ends of their migration range, so I’ll end with a video from the most excellent CONCH SALAD TV that is dedicated to these tiny wave-chasers. Abaco is one of the main areas for winter research into the piping plover population. Scientists visit the island to find the birds, count them, collect reports of sightings, check and identify tagged birds to determine their origin, and ensure the continuing good health of their habitat, without which the PIPL will be lost. You can find out more about this vital work carried out out by the CONSERVE WILDLIFE FOUNDATION OF NEW JERSEY HERE.

THE DELICATE TASK OF RINGING TINY BIRDS
lbi-piping-plover-chick

Credits: MLF/ Ontario; Exit63 ‘Mr Norfside’ to whom a major tip o’ the hat; Conch Salad TV