MELLOW YELLOW: HOODED WARBLERS ON ABACO

September 29, 2016 by Rolling Harbour

MELLOW YELLOW: HOODED WARBLERS ON ABACO

The Hooded Warbler (Setophaga citrina) breeds in eastern North America in summer, and winters in Central America and the West Indies. On Abaco they are classed as WR3, ‘uncommon winter residents’. The range map below reveals one strange aspect of their habitat. It looks as though they choose not to live in Florida either in summer or winter. I’m sure they must be found there as transients; and there must presumably be some small breeding or wintering populations in Florida. Or both. But it’s hard to understand why Florida does not seem to suit them.

220px-wilsonia_citrina_map-svg

ABACO WARBLER HOTSPOT

On Abaco, I have only ever had reports of Hooded Warblers from Man-o-War Cay, which seems to be a warbler hotspot every season. There are 37 WARBLER SPECIES recorded for Abaco. FIVE WARBLER SPECIES are year-round residents. Of the migratory 32, at least two dozen seem to favour Man-o-War for their winter break in the sun. MoW resident Charmaine Albury, who took the main photos in this post, has already counted 14 different warbler species before the end of September. She has found up to 5 species in a tree at the same time.

WHAT’S IN A NAME?

There are periodic upheavals in Birdland which, following research, lead to an official reclassification of a particular bird species or genus. In 2011, many warblers that were cheerfully going about their business under the classification Dendroica found themselves merged into the older ‘priority’ genus Setophaga (Greek for ‘moth eating’). The Hooded Warbler, formerly Wilsonia, has found itself similarly merged into Setophaga – a kick in the teeth for the naturalist ALEXANDER WILSON, for whom the bird was named (along with many others – his plover being a well-known example on Abaco).

hooded-warbler-copy

WHY ‘CITRINA”? (FUN FACT!)

The word relates to lemons – citrus fruits – and their colour, and is undoubtedly apt for the hooded warbler. However the semi-precious calcite gem, ‘Citrine’ (same word origin) is not lemon coloured but (disappointingly) brownish.

imgres natural-citrine-calcite

This little warbler has a plain olive / greeny-brown back, and a bright yellow face and underparts. There are white feathers on the outsides of their under-tail (I’m sure there’s a more technical word for this…) – see header image. Only males have the black hoods and bibs; females have an olive-green cap.

Hoodies forage for insects in low vegetation and dense undergrowth, or catch them by HAWKING from a branch or twig. Sadly, they are one of the species that are targeted by brown-headed cowbirds, the cruel exponents of brood parasitism. These birds are rarely found transients on Abaco at present, but they are a robust species and there is evidence that their range is increasing. In some areas there are controlled (euphemism for… er… dispensed with). I’d favour that approach for Abaco, should they show signs of inflicting their evil ways on the resident breeding population of small birds.

Audubon plate-110-hooded-warbler-final

Hooded Warbler in Audubon’s Birds of America

WHAT DO THEY SOUND LIKE?

I am often at sea with the attempts to turn birdsong into to memorable words of phrases. Yes, a Bobwhite sounds a bit like a quizzical ‘Bob… White?‘. But I rarely ‘get’ the “I’d-like-a-Kalik-with-my-Conch” and suchlike. For what it is worth, I learn that for the Hooded Warbler “the song is a series of musical notes which sound like: wheeta wheeta whee-tee-oh, for which a common mnemonic is “The red, the red T-shirt” or “Come to the woods or you won’t see me“. See what I mean? Anyway, we can all agree that “the call of these birds is a loud chip.” As with so many species!

So here’s what to listen out for (recording: FLMNH). Suggestions for a suitable phrase welcome!

1291c 3646

If you come across a bird that looks like a hooded warbler, but is motionless and makes no sound unless you squeeze it, you may have found the subspecies Audubonus stuffii, which is found mainly in the Amazon and E. Bay regions. 51idfxzal

OPTIONAL MUSICAL DIVERSION

I haven’t had time to musically divert for a while. My title refers, of course, to the ‘psychedelic pop’ song by Donovan, released in the US in 1966 and the UK in early 1967. The theory is that the song relates to the supposed (but mythical) hallucinogenic high to be had from smoking dried banana skins. There are an explicit interpretation for the ‘electical banana’ which we need not go into in a family blog. There was a rumour, now discredited, that Paul McCartney supplied the “quite rightly” in the chorus. Anyway, to chime in with the mood of the time, one of the first ‘coffee shops’ in Amsterdam was called Mellow Yellow.

donovan_-_mellow_yellow

ABACO’S 37 WARBLER SPECIES

ABACO’S 5 PERMANENT RESIDENT WARBLERS

hooded-warbler-copy

Credits: Charmaine Albury for the photos and her warbling work on Man-o-War Cay; Luis Alvarez-Lugo (Wikipici); random open source material; FLMNH (birdsong); my iTunes

THINK PINK: A RUNCIBLE OF SPOONBILLS

September 20, 2016 by Rolling Harbour

THINK PINK: A RUNCIBLE OF SPOONBILLS

Healthy happy hungry birds ‘in the pink’. Always a pleasure to see. And when there is a group of them, how often one reaches for the correct collective noun: a murder of crows, an exultation of larks, a murmuration of starlings, a parliament of owls and so forth. Many are historical terms, dating back to medieval times in Europe, and often linked to hunting and falconry. As a rule of thumb, the more recent the term, the more likely to have been invented – especially if there is a comedy undertone.

The trouble with spoonies is that there is no historic or traditional name for a group of them. In such circumstances, using the term ‘flock’ is generally the safest bet. A quick glance online suggests that modern suggestions are mainly jocularly cutlery-based: a canteen, a measurement, a service, and… a ‘runcible’ (a neat nod to Lewis Carroll). That’s the one I prefer.**

One thing is beyond dispute: Phil Lanoue takes some of the best bird action shots around, and I’m proud to be permitted to showcase them from time to time. Spoonbills are rare enough these days in the northern Bahamas, so it is good to know that they are thriving not so very far away to the west. Abaco still has occasional spoonbills dropping in – you can see the latest one, found at Gilpin Pond, HERE.

What are you guys looking at?

Got to get every feather just right…

**The slightly ill-tempered-sounding baldmonkeyseenabird suggests ‘a repugnance of spoonbills’ but I think he / she may have been having a difficult day…

All photos by Phil Lanoue. Check out his awesome website https://phillanoue.com

I must fly now… see ya!

SEABIRDS, SHOREBIRDS & WADERS: 30 WAYS TO DISTINGUISH THEM

September 14, 2016 by Rolling Harbour

SEABIRDS, SHOREBIRDS & WADERS: 30 WAYS TO DISTINGUISH THEM

While putting together “The Birds of Abaco” I looked at and archived hundreds of photos of birds, many with aquatic or semi-aquatic lives. These can be broadly categorised as seabirds, shorebirds or wading birds. But with some bird breeds, there can be doubt as to which category applies (and in different parts of the world the categories themselves may be named differently). There is the strict Linnaean ordering of course, but in practice there is a degree of informal category overlap and some variation in the various bird guides. This is especially so between shorebirds and the smaller wading birds. Shorebirds may wade, and wading birds may be found on shores. Then I remembered a past blog post by the estimable BEACH CHAIR SCIENTIST that I thought deserved another outing here. Even if you have no problem distinguishing birds in the 3 categories, there are avian characteristics within each list that are interesting observations in themselves.

10 CHARACTERISTICS OF SEABIRDS

(Examples include albatross, auk, booby, frigatebird, fulmar, gannet, penguin, petrel, puffin, shearwater, and tropicbirds)

1. Seabirds are pelagic, spending most of their lives far out at sea.
2. Seabirds move toward to coastal areas to breed or raise young for a minimal amount of time.
3. Seabirds are light on their undersides and dark on top (an adaptation known as countershading).
4. Seabirds have more feathers than other types of birds for more insulation and waterproofing.
5. Seabirds have flexible webbed feet to help gain traction as they take off for flight from the sea.
6. Some seabirds have unusually sharp claws used to help grasp fish under the water.
7. Some larger seabirds (e.g. albatross) have long, slim wings allowing them to soar for long distances without getting tired.
8. Some smaller seabirds have short wings for maneuvering at the surface of the water.
9. Seabirds have specialized glands to be able to drink the saltwater and excrete salts.
10. Some seabirds (e.g. gannets) have a head shape that is usually tapered for more efficiency in plunge diving.

10 CHARACTERISTICS OF SHOREBIRDS

(Examples include avocet, black skimmer, oystercatcher, plover, sandpiper, and stilt)

1. Shorebirds have long legs, pointed beaks, and long pointed wings.
2. Most shorebirds are migratory (impressively, some shorebirds fly non-stop for 3-4 days, equivalent to a human running continuous 4-minute miles for 60 hours).
3. Shorebirds wade close to the shore and poke their bills into the ground in search of food.
4. Shorebirds are small to medium size wading birds.
5. Shorebirds tend to frequent wetlands and marshes and are biological indicators of these environmentally sensitive lands.
6. Shore birds are of the order Charadriiformes.
7. Shorebirds are very well camouflaged for their environment and their appearance may vary from place to place as plumage (feather colors) are gained or lost during breeding.
8. Shorebirds typically range in size from 0.06 to 4.4 pounds.
9. Oystercatchers have a unique triangular bill that is a cross between a knife and a chisel.
10. The black skimmer is the only native bird in North America with its lower mandible larger than the upper mandible, which helps the bird gather fish as it skims the ocean surface.

10 CHARACTERISTICS OF WADING BIRDS

(Examples include crane, egret, flamingo, herons, ibis, rail, spoonbill, and stork)

1. Wading birds are found in freshwater or saltwater on every continent except Antarctica.
2. Wading birds have long, skinny legs and toes which help them keep their balance in wet areas where water currents may be present or muddy ground is unstable. Also, longer legs make it easier for them to search for food (forage) in deeper waters.
3. Wading birds have long bills with pointed or rounded tips (depending on what is more efficient for the types of food the bird consumes).
4. Wading birds have long, flexible necks that can change shape drastically in seconds, an adaptation for proficient hunting.
5. Herons have sophisticated and beautiful plumes during the breeding season, while smaller waders such as rails are much more camouflaged.
6. Wading birds may stand motionless for long periods of time waiting for prey to come within reach.
7. When moving, their steps may be slow and deliberate to not scare prey, and freeze postures are common when these birds feel threatened.
8. Adult wading birds are quiet as an essential tool for hunting. Wading birds may be vocal while nestling or while in flocks together.
9. Many wading birds form communal roosts and breeding rookeries, even mixing flocks of different species of wading birds or waterfowl.
10. Wading birds fully extend their legs to the rear when flying. The neck may be extended or not while in flight, depending on the species.

These lists were put together in useful chart form. Please check with BCS (link above) if you want to ‘borrow’ itImage Credits: Table – ©Beach Chair Scientist; Pics – Keith Salvesen, Michael Vaughn, Tom Sheley

WORLD SHOREBIRDS DAY? YAY! AN ABACO COMPETITION!

September 2, 2016 by Rolling Harbour

WORLD SHOREBIRDS DAY? YAY! AN ABACO COMPETITION!

In the past I have occasionally offered a Kalik™ (half in jest) for a ‘right answer’ or a nugget of info. Anyone who didn’t get their beer can still claim it, of course [no, no, not all at once please…]. But now I’m getting serious. World Shorebird day is on September 6th, and this weekend sees a global shorebird count in which, it is hoped, large numbers of people will scan their shorelines and post the results on the great and good resource that is eBird.

13873031_859587794145299_7383541518099186659_n

But you don’t need to go to those lengths. Here’s the deal. Is there a bit of beach near you (hint: on Abaco you’ll never be far from a beach or shoreline except in the National Park)? If the answer is yes, then can you spare an hour (or two?) to take a walk on the beach over the weekend? Or Monday and Tuesday? If so, can you look for a particular rare bird that makes its home on Abaco for the winter? Great. You’re in the competition, then. And there’ll even be a PIPL-related prize…

Piping Plover (Danny Sauvageau) 1

THE (SOMEWHAT FLEXIBLE) RULES

go for a beach walk, taking a notebook, pen, a camera or even just a phone. Binoculars would be good.
look for tiny shorebirds that look like the birds in this post
count how many you see at a time (watch out, they move quite fast). Maybe 1 or 2. A dozen is the likely max.
check their legs for coloured flags or bands and if possible note the colours and any numbers / letters
if possible, take photos of the bird(s), showing legs if banded. Don’t worry too much about quality – enhancement is possible
tell me about what you found and send me any photos (see below)

HOW WILL I KNOW WHAT TO LOOK FOR?

Size – very small (6″ – 7″) and usually busy
Legs – orange
Beak – black, possibly with a hint of orange at the base
Eyes – black and beady, with a streak of white above
Front – white / very pale
Underside – ditto
Back – greyish / brownish-tinged
Head – ditto
Tail – darker feathers at the end
Neck ring – a greyish hint of a partial one (they are black in summer)

WHERE WILL I FIND ONE?

On a beach or maybe a rocky shoreline
Out in the open on the sand, anywhere from back of the beach to the shoreline
Foraging in the tide margins
Rushing round in a seemingly random way
Taking a dip in a sea-pool (see above)
On a rock near the sea

WHAT DO YOU WANT TO KNOW?

In an ideal world, all the details below. But I’d be really pleased just to find that you had seen a piping plover on your chosen beach. Even the knowledge that a particular part of the shoreline is favoured by the birds is valuable for their conservation. The most useful info is:

Date, name of beach, approx location (‘north end’). Time would be good too, and whether tide high, mid or low
Number of piping plovers seen (if any) and how many banded / flagged (if any).
Impression of bands if unclear: ‘I think it was… a green flag / an orange ring / a metal ring’ or if visible…
‘One was green flag 2AN on it’ / ‘one had bands – left leg upper leg orange, right upper leg light blue…’
Take a photo. This will help eliminate other species of shorebird from the ID, and enable a close-up look

WHAT’S THE POINT OF BANDING & TRACKING THEM?

Marking a plover with coloured bands or flags (or a combo) gives a unique ID to each bird. Usually it will be done on the beach where they hatched, within a day or two. These adornments weigh nothing, do not impede the birds in foraging or in flight (or when mating…) and expand as they grow. The scientists who carry out the banding will have weighed and measured the hatchling and made a detailed record of the data collected. They need to get as much information as possible about the habits of each bird to help with conservation initiatives at both ends of the migrations.

Each fall the plovers travel south between 1000 and 2000 miles south from their summer breeding grounds. Tracking individual birds to where they overwinter enables scientists to build up a picture of the type and location of fragile habitat that these little birds prefer, and to compare the annual data for each banded bird. For example

A particular beach does not seem to attract piping plovers at all (there may be several good reasons for this)
A particular beach has single or small groups of piping plovers who come and go but don’t settle there
A particular beach usually has at least one or a few birds on it who show ‘beach fidelity’, eg Winding Bay
If birds are found in groups – more than 10, say – in a particular location, it means the beach suits the breed especially well. It is sheltered, has plenty of scope for good foraging, few predators, and has not been spoilt by humans. Long Beach (Island Homes) is a good example. Last December, groups of more than 60 were found there. It’s a *hotspot*!

GIVE US AN EXAMPLE, PLEASE

Last season a bird called Tuna (see photo above) arrived at Watching Bay (Cherokee) in at the end of August. He moved from time to time to the Cherokee mud flats and Winding Bay, but mostly he remained at Watching Bay until April. His unique banding colours and their positioning led to the following information

The precise coordinates of location of the nest where he hatched in New Jersey
The date of hatching, banding, fledging and the last date he was seen there before migrating to Abaco
The name of the banders, plus his weight and the length of his body, wings, legs and beak
Even the names of Tuna’s parents. In fact, mother Paula headed to the Bahamas too – she was resighted on Joulter Cays, Andros last winter.

Tuna was not reported over this summer – he didn’t return to his ‘birth beach’ – but we believe Tuna is now back at Watching Bay The distant photos were not clear enough to make a positive and definite ID. On the next visit we may know for sure, and all because of the bands. And we’ll know that he likes Abaco enough to fly back 1200+ miles to the same beach as last year. We can conclude that Watching Bay provides a suitable and safe habitat for Piping Plovers.

WHAT’S IN IT FOR ME?

Potential ‘fun for all the family (nb best leave the dog at home for this adventure…)
Exercise in a lovely beach setting
Seeing a rare and vulnerable bird in its natural setting
Wonderment that such a tiny bird should fly many miles & choose Abaco to overwinter
Assisting in logging the beach presence of the birds so that researchers know where to look
Helping count the birds so that year-on-year comparisons of the population can be monitored
Getting appreciation and thanks
Being described as a ‘Citizen Scientist’
Winning a prize if your are the most successful finder of banded birds, as verified by photos

Piping Plover pair, Delphi Beach, Abaco (Keith Salvesen)

I’ll post details of sightings on ABACO PIPING PLOVER WATCH with credited photos. Later I’ll follow up with a ROLLING HARBOUR post summarising the results, listing the participants and their scores of both unbanded and banded birds, and naming the winner of the PIPL-themed prize to mark their glory…

Contact me via APPW, DM me on my FB page, or email me at rollingharbour.delphi [at] gmail.com

GOOD LUCK!

13873031_859587794145299_7383541518099186659_n

Credits: Danny Sauvageau, Charmaine Albury, Bruce Hallett, Keith Salvesen, Rhonda Pearce, Linda Barry-Cooper, Gyorgy Szimuly (WSD logo)

HUNGRY MOUTHS TO FEED: W.I. WOODPECKER CHICKS (PT 2)

August 29, 2016 by Rolling Harbour

HUNGRY MOUTHS TO FEED: W.I. WOODPECKER CHICKS (PT 2)

In just a few days, the West Indian WOODPECKER CHICKS have become bigger, noisier and much hungrier. Their heads are now tinged with red. They have started to compete for food: the first chick to push its way to the entrance hole gets the most food. Often there will be a smaller or weaker chick that gets rather left out in the frantic rush for grub (make that ‘grubs’ – see header image). But I suspect quite a lot of food shrapnel gets dropped and spread around inside the nest, so that in the end all the chicks are well sustained.

Rhonda Pearce has been taking photos of this growing family over the last few days, and if you saw my post last week, you will notice that the size of the chicks and the size of the food morsels jammed down their eager gullets has increased considerably…

A lizard hangs on tightly to the parent’s beak… but sadly it is doomed to be dinner…

Mmmmmmm. It’s so tasty, little one…. and even if it isn’t, it’s going in

Hey, kids, who wants a bug with wriggly legs and feelers?

What do we want? Food! When do we want it? Now!

“Wishin’ and hopin’…”

“Is there any left for me…?”

RELATED POSTS

HUNGRY WIW CHICKS (PT 1)

WEST INDIAN WOODPECKERS

WIWs AT DELPHI

Credits: all photos, Rhonda Pearce

HUNGRY MOUTHS TO FEED: WEST INDIAN WOODPECKER CHICKS

August 25, 2016 by Rolling Harbour

HUNGRY MOUTHS TO FEED: WEST INDIAN WOODPECKER CHICKS

West Indian Woodpeckers are special. So special that Abaco even has its own subspecies Melanerpes superciliaris blakei. They are joyful and noisy. They noisily share parenting duties in an admirably modern way. And did I mention they are noisy?

West Indian Woodpeckers & Chicks (Rhonda Pearce)

The parents set up home together, with both partners taking their turns to choose the furnishings and fit out the nest. They share duties on the nest once the eggs have hatched. And they take turns to feed the nestlings as they grow into increasingly hungry and raucous fledglings.

West Indian Woodpeckers & Chicks (Rhonda Pearce)

This feeding sequence was taken by Rhonda Pearce whose ravenous chick in the header photo is one of the best I have come across. I have never managed to get such a clear shot of desperate chick hunger…

Here’s how a nest can sound when the chicks are young – a weird sort of insistent purring sound. As the chicks get larger – and more competitive – so the volume level increases.

Get this down your throat, you pesky little rascal… West Indian Woodpeckers & Chicks (Rhonda Pearce)

RELATED POSTS

WEST INDIAN WOODPECKERS

WIWs AT DELPHI

Credits: all photos, Rhonda Pearce; audio recording RH @ Delphi Club nesting boxes

SANDWICH TERNS: NO LINK TO BREAD SLICES, SAY SCIENTISTS

August 19, 2016 by Rolling Harbour

SANDWICH TERNS: NO LINK TO BREAD SLICES, SAY SCIENTISTS

Have you noticed how newspapers and periodicals increasingly seize every opportunity for a headline ending “…say Scientists”. It lends a spurious authority to any tenuous assertion, like “astronauts unlikely to find cheese on moon, say Scientists” (suggesting at least the faint possibility of some mature cheddar lodged in a crater). Or “Frooty-pops cereal may protect against ingrown toenails, say Scientists”. To which the proper response is: “research reference please”. But it seems 37.9% of people are actually prepared to believe this tendencious stuff… say Scientists.

But I digress. To the business in hand. The Sandwich Tern (Thalasseus sandvicensis) is a smart-looking medium-sized tern. Its clearest ID signifier among terns is a sharp black beak with a yellow tip. Also, its black legs helpfully distinguish it from other tern species that have orange legs. Sandwich Tern (Sandy Point), Abaco - Bruce Hallett

The origin of the name for this species is an unexpected one. The Thaleasseus (formerly Sterna) simply refers to the sea (Gk). The Sandwich part is more complicated. It’s certainly nothing to do with a tasty filling for a sliced bread snack **. Other bird species such as Branta sandvicensis, an endemic Hawaiian goose, have the name because Hawaii was historically known as the Sandwich Islands. But Sandwich terns are not found there. In fact, the name comes from the town name of Sandwich, Kent UK (sand wic OE – ‘trading post by the sea’). The ornithologist who first described the bird in 1787, John Latham, just happened to live there. (And how fortunate for ornithology that he did not come from Pratts Bottom, also in Kent).

Sandwich Tern, Abaco (Woody Bracey)

Sandwich terns have a wide range around the world. As the range map below show, the most significant breeding area is Great Britain and northern Europe. On Abaco, the birds are uncommon summer residents. Both images above were taken on the main island, the top one at Sandy Point on the jetty (an excellent place for birdwatching, incidentally). Thalasseus_acuflavidus_and_Thalasseus_sandvicensis_map-location-2.svg Sarnie Tern range

Like all the Thalasseus terns, the Sandwich tern plunge-dives for fish. I love the sight of diving terns. They hang high in the air as they scope out the water for fish, only to break free from the sky and smash down into the sea, often emerging with a silver prize. Here’s a wonderful photo of one that missed its meal – and one that succeeded.

Sandwich Tern (Danny Sauvageau) An endearing characteristic of these terns can be seen during their courtship display. The male will catch a fish, then offer it to the female. Her acceptance of the gift signals her readiness to approve the male as a suitable mate.

Of the 12 tern species recorded for Abaco most are summer residents, some of which breed on Abaco. The royals are the only permanent residents; and the Forster’s are the only winter residents. The other 4 species are transient in migration, or vagrant (arctic tern).

Tern Species on Abaco

As I have mentioned before, a very good source for easy ID to distinguish between different birds of the same family is to head off to BIRDORABLE. The drawings (cartoons!) may not be scientific, but they do highlight the most notable distinctions. Invaluable as a last resort. Or first resort, even! For similar-looking birds, compare the beaks and the legs. The composite below shows how simple it is.

91b5e2a19a20fb1eeace596efbac5a57

Noisy neighbours? Put this short recording of a sandwich tern colony in the breeding season on a continous loop, and you have the makings of a powerful retaliatory weapon. They’ll be out within a fortnight…

Alex Lees / Xeno-Canto

** The food we call a sandwich was named after the 4th Earl of Sandwich. He found eating while playing cards inconvenient, so asked his valet for two slices of bread, requesting “and squash a tern between them, if you’d be so very kind…” The Sandwich Islands were also named after his Lordship by Captain James Cook, as a compliment for financially supporting an expedition there, say Historians…

Sandwich_Tern_(Sterna_sandvicensis)_(Ken Billington)

Credits: Danny Sauvageau (1, 4, 5); Bruce Hallet (2); Woody Bracey (3); Ken Billington (6); Alex Lees @ Xeno-Canto, Birdorable, wiki for range map & info, other magpie pickings of glistening facts