BLACK-THROATED BLUE WARBLERS ON ABACO

Black-throated Blue Warbler (m), Abaco (Gerlinde Taurer)

BLACK-THROATED BLUE WARBLERS ON ABACO

It’s warbler time of year on Abaco, and a good time to take a look at the Black-throated blue warbler Setophaga caerulescens. This small warbler has very particular breeding and overwintering ranges. In the summer they are found in the forests and woods of eastern North America. As the Fall approaches, they start to migrate south to the Caribbean and Central America. Abaco is one of their winter homes, as well as a likely transit stop on their way further south. Right now sightings are being reported on the mainland and the Cays.

Black-throated Blue Warbler (m), Abaco (Gerlinde Taurer)

WHAT DO I LOOK OUT FOR?

Males and females are quite different in appearance (‘sexually dimorphic’), and could even be mistaken for distinct species. Males are a deep slate-blue above (hence caerulescens) with a striking black face and throat, and white underparts. They are unmistakeable, and unlikely to be confused with any other warbler. Females are basically grayish-olive above and pale yellow underneath. For ID, look for a white stripe above the eye, a pale arc below it. In addition, both sexes have a diagnostic white patch on the the wing.

Black-throated Blue Warbler (f), Abaco (Becky Marvil)

The bird cartoon site Birdorable as usual has a spot-on comparison of the sexes

Black-throated Blue Warbler (m & f comparison) (Birdorable)

These pretty warblers can be seen in gardens, coppice, and woodland. Although mainly insect-eaters, sometimes catching them in flight, they also eat fruit and seeds especially in winter. BTBWs are territorial, and will defend their chosen space against all-comers, including their own species.

Black-throated Blue Warbler (m), Abaco (Bruce Hallett)

WHAT DO I LISTEN OUT FOR?

One source asserts: “The bird’s song can be described  as a buzzed zee-zee-zeeee with an upward inflection. Its call is a flat ctuk”. See what you think…

SONG Etienne Leroy / Xeno-Canto

CALL Paul Marvin / Xeno-Canto

                        

Black-throated Blue Warbler (m) (Blaine Rothauser CWFNJ)

Black-throated Blue Warbler (f) (Dax Roman / Birds Caribbean)

ARE BTBWs THREATENED?

BTBWs are fairly common birds within their range, with a large population. The usual stuff is happening with them in terms of habitat destruction & co at both ends of their migration. For some already threatened species (e.g. Kirtland’s Warblers), habitat degradation at either end of the migration (let alone both) presages a downward spiral in population. With BTBWs, I have read both that the population is decreasing; and in another source, slightly increasing. For now, let’s regard the welfare of the species as being stable. However, the current causes of species decline will doubtless continue, and many regard increasingly evident climate change as being a determining factor for the well-being of migratory species. The birds are not yet out of the woods, so to speak… and maybe never will be.

CREDITS Photos: Gerlinde Taurer (1, 2); Becky Marvil (3); Bruce Hallett (4); Blaine Rothauser / CWFNJ (5); @daxroman / Birds Caribbean (7); Paul Reeves / Birds Caribbean (8).  Range Map, Wiki; Cartoons,  Birdorable; Video, Cornell Lab for Ornithology

Black-throated Blue Warbler (m) (Paul Reeves / Birds Caribbean)

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PALM WARBLERS

Palm Warbler, Abaco Bahamas (Bruce Hallett / Tom Sheley)

PALM WARBLERS: ‘HEADS-UP FOR BUTTERBUTTS’

I realise that the title of this post has its unattractive aspects. This is a family blog, and we try to keep references to ‘butts’ and so forth to a minimum. But like it or not, the Palm Warbler is one of two species** that have acquired the nickname ‘butterbutt’.  They weren’t even consulted; birders just went ahead with it without checking how they’d feel about it.

Palm Warbler, Abaco Bahamas (Gerlinde Taurer)

On the other hand, it’s easy to see how this minor linguistic outrage came about. It’s there for all to see, right under the bird’s… erm… stern. That flash of vivid yellow, together with the pale speckled front, a rusty brown cap and striking eye-stripe, is diagnostic for this Abaco winter resident species.

Palm Warbler, Abaco Bahamas (Nina Henry)

The ‘heads-up’ is because right now they are among you. In the gardens, on the grass, on the tracks, in the coppice, in the casuarinas. And they have an endearing habit of bobbing their… tails, let’s say, as they forage. Palm Warblers are inclined to be fairly inquisitive and tame, so if you are careful, they may stay around to let you watch them. 

Palm Warbler, Abaco Bahamas (Nina Henry)

The PW above must, I think, have been photographed at the very end of the winter season, just before it headed north from Abaco. The strong colours suggest this guy is getting into the breeding mood. Compare him with the picture below, taken by the same photographer during the same period, of a slightly less garish stage of breeding plumage. But it’s on its way…

Palm Warbler, Abaco Bahamas (Nina Henry)

As often as not, a palm warbler will be fairly easy to spot. Not always, though. You may have to work a bit to locate one half-hidden in foliage. Its posterior may not even be visible.

Palm Warbler, Abaco Bahamas (Peter Mantle)

Luckily, PWs are common enough in winter to give you a chance to shoot them in the open, as it were. Perched on a branch works just fine to capture the essential characteristics.

Palm Warbler, Abaco Bahamas (Gerlinde Taurer)

Keep an eye out for these pretty little warblers. They are enjoyable to watch, and relatively easy to get a photo of at close quarters. Just make sure you get the butterbutt into the picture.

** The other butterbutt bird is the descriptively-named YELLOW-RUMPED WARBLER, though its buttery bits are on the topside so there’s no risk of confusion (I photographed this one as a distance shot at the top of a tree with a small camera – but it captures the essentials!)

Yellow-rumped Warbler, Abaco, Bahamas (Keith Salvesen)

Credits: Bruce Hallett (1)*; Gerlinde Taurer (2, 7); Nina Henry (3, 4, 5); Peter Mantle (6); Keith Salvesen (8, 9)

* Possibly Tom Sheley – all I have got on the filename is ‘Fruit Farm’ so I can’t be sure of the photographer’s ID – apologies

 Palm Warbler, Abaco Bahamas (Keith Salvesen)

AMERICAN OYSTERCATCHERS ON ABACO

American Oystercatcher.Delphi Club.Abaco Bahamas.Tom Sheley

AMERICAN OYSTERCATCHERS ON ABACO

The American Oystercatcher Haematopus palliatus is a familiar shorebird, with the significant advantage that it cannot be mistaken for any other shore species either to look at or to hear. Among all those little sandpipers and plovers, the handsome AMOY stands out from the crowd. 

Photos by Tom SheleyAmerican Oystercatcher.Delphi Club.Abaco Bahamas.Tom Sheley American Oystercatcher.Delphi Club.Abaco Bahamas.Tom Sheley

Photos by Bruce HallettAmerican Oystercatcher.Abaco Bahamas.Bruce HallettAmerican Oystercatcher.Abaco Bahamas.Bruce Hallett

Here are two recordings of oystercatchers, unmistakeable call sounds that will probably be instantly familiar.

Lopez Lanus / Xeno-Canto

Krzysztof Deoniziak / Xeno-Canto

I like the rather dishevelled appearance of this AMOY from Jim Todd, fly fisherman, author of ‘The Abaco Backcountry’, and intrepid kayak explorer around the coast of AbacoAmerican oystercatcher Abaco (Jim Todd)

Two photos taken on the Delphi beach by Charlie SkinnerAmerican Oystercatcher, Abaco (Charlie Skinner)American Oystercatcher, Abaco (Charlie Skinner)  A low ‘in-flight’ shot by Bruce HallettAmerican Oystercatcher.Abaco Bahamas.Bruce Hallett

This fine video from Audubon shows close-up views of the American Oystercatcher, and unleashes more of the distinctive call-sounds – an insistent wittering – of the species.

For some time, I found it difficult to distinguish American and Eurasian Oystercatchers. The markings of both species are variable according to gender, age, season and so on, but are generally very similar. Mrs RH noticed the salient difference at once – the eyes. The AMOY has bright orange eyes with red eye-rings; the EUROY’s eyes are the reverse colouring, as this example shows.

Eurasian Oystercatcher (spot the difference)Eurasian Oystercatcher. BBC

 Credits: Tom Sheley, Bruce Hallett, Jim Todd, Charlie Skinner, Xeno-Canto, Audubon, BBC

YELLOW-THROATED WARBLERS ON ABACO

Yellow-throated warbler, Abaco (Keith Salvesen)

YELLOW-THROATED WARBLERS ON ABACO

The Yellow-throated Warbler (Setophaga dominica) is a most helpful warbler, in that what you see is what you get. You needn’t go to embarrassing lengths to determine whether it has a Yellow Rump. It doesn’t make extravagant geographical claims like the Cape May, Kentucky, Tennessee, Nashville or Connecticut warblers. It doesn’t disguise its warblerdom with a confusing name like ‘American Redstart’ or ‘Ovenbird’. Nor with a weird warbler name that is completely obscure like the Prothonotary. It’s a winter resident only, so it won’t try to puzzle you in the summer. The males and females are roughly similar in appearance, unlike so many species. All-in-all, a most agreeable and obliging little bird. Here are a few to enjoy, before I spoil the magic slightly…

Yellow-throated Warbler, Abaco (Bruce Hallett)Yellow-throated Warbler, Abaco (Bruce Hallett) 2Yellow-throated warbler, Abaco (Erik Gauger)Yellow-throated Warbler, Abaco (Becky Marvil) Yellow-throated Warbler, Abaco - Becky MarvilYellow-throated warbler, Abaco (Keith Salvesen)

Yellow-throated warbler, Abaco (Keith Salvesen)

Yellow-throated warbler, Abaco (Keith Salvesen)Yellow-throated warbler, Abaco (Keith Salvesen)

I said earlier that the magic of the apparently simple ID of a warbler that lives up to its name would have to be spoiled. I’m afraid the images below rather undo the certainties I’d promised… two more species common to Abaco, also named for their yellow throats (though note: the yellow extends to more than just the throat) . 
BAHAMA YELLOWTHROAT20130106_Bahamas-Great Abaco_4846_Bahama Yellowthroat_Gerlinde Taurer copy
COMMON YELLOWTHROAT
800px-Common_Yellowthroat_by_Dan_Pancamo
You’d really think that someone at Audubon Towers or Cornell Castle might have thought of calling these two species ‘Bahama’ and ‘Common’ Masked Warblers, wouldn’t you – after all there’s a Hooded Warbler, which indeed has a hood. No other warbler has a mask like these two. Then any confusion could be avoided.
Credits: Keith Salvesen (1,7,8,9,10); Bruce Hallett (2, 3); Erik Gauger (4); Becky Marvil (5, 6). Thumbnails: Gerlinde Taurer, Dan Pancamo

BLACK-FACED GRASSQUITS ON ABACO

Black-faced Grassquit male, Abaco (Alex Hughes)

Until 2016 the black-faced grassquit Tiaris bicolor was officially classified with other passerine emberizidae (e.g. antillean bullfinches & sundry New World sparrows).  The classifications committee of the American Ornithological Union recently moved them to join tanager-type species, specifically the dome-nesting ones. Now they are considered to be closely related to Darwin’s finches; and they join the broader category that includes tanagers, grosbeaks, and buntings. 

All photographs taken on Abaco, as credited below

black-faced-grassquit-adult-male-eating-berry-abaco-bahamas-tom-sheleyblack-faced-grassquit-foraging-berry-2-abaco-bahamas-tom-sheleyBlack-faced Grassquit male, Abaco (Bruce Hallett)

Black-faced Grassquit, Abaco (Tom Reed)Black-faced Grassquit - Treasure Cay, Abaco (Becky Marvil)Black-faced Grassquit male, Abaco (Peter Mantle)Black-faced Grassquit male, Abaco (Gerlinde Taurer)Black-faced Grassquit female, Abaco (Bruce Hallett)Black-faced Grassquit male, Abaco (Alex Hughes)

THE BFG EVERYDAY TWITTERING SONG 

THE BFG DISPLAY BUZZING SONG 

Black-faced Grassquit male, Abaco (Tom Reed)Black-faced Grassquit male, Abaco (Keith Salvesen)

Credits: Alex Hughes (1, 10); Tom Sheley (2, 3); Bruce Hallett (4, 9); Tom Reed (5, 11); Becky Marvil (6); Peter Mantle (7); Gerlinde Taurer (8); Keith Salvesen (12); Whatbird? (sound files)

AMERICAN KESTRELS ON ABACO

american-kestrel-f-abaco-bruce-hallett-img_1235-copy

As many or most of the images show, utility wires (also posts) are a favourite perch for kestrels. They get an unimpeded view of the only thing that really matters in their lives – outside the breeding season, of course – PREY. 

american-kestrel-abaco-charles-skinneramerican-kestrel-abaco-2-peter-mantle

In my experience it’s quite rare to see AMKEs on the ground – unless they are in the act of ripping up some hapless rodent pinned to the earth. I was with photographer Tom Sheley when he captured this fine bird in the grass. 

american-kestrel-abaco-bahamas-tom-sheley-copy

Tom also took this outstanding photo, on an overcast day, of a kestrel feeding its fledgeling a large insect.american-kestrel-feeding-fledgling-2-delphi-club-abaco-bahamas-tom-sheley

An AMKE at Treasure Cayamerican-kestrel-treasure-cay-abaco-bahamas-6-13-tom-sheley

A richly-coloured specimenAMERICAN KESTREL, Abaco -Nina Henry

A kestrel in streamlined flight, with its feet tucked tightly under its bodyamerican-kestrel-abaco-tom-reed

Bird on the Wireamerican-kestrel-abaco-peter-mantle-copyamerican-kestrel-abaco-1

Credits: Bruce Hallett (1, 11); Charles Skinner (2); Peter Mantle (3, 9); Tom Sheley 4, 5, 6); Nina Henry (7); Keith Salvesen (10); Tom Reed (8)

american-kestrel-f-abaco-bruce-hallett-img_1222

TRICOLORED HERONS

tricolored-heron-phil-lanoue-3

TRICOLORED HERON: AN ELEGANT & PATIENT FISHER

The Tricolored Heron Egretta tricolor is one of 6 heron species found on Abaco, and is a permanent breeding resident. To which can be added 4 sorts of egret to complete a line up of expert fishers, all equally at home hunting in the water or from the shore, or surveying the scene from nearby vantage points like bushes and trees. A long neck, a long bill and long legs make this heron species ideally adapted for wading. Like other herons and egrets, it will stand stock-still waiting for the perfect fish to swim into range. However they are also active hunters, and will stalk prey or chase it by striding quickly through the water in pursuit. They eat fish, crustaceans, reptiles, and insects.

tricolored_heron2_by_dan_pancamo (Wiki)
tricolored-heron-gilpin-point-abaco-keith-salvesen

The heron and egret species of Abacoherons-egrets-abaco

tricolored-heron-abaco-woody-braceytricolored-heron-abaco-bruce-hallet

Breeding plumage: smart blue bill and a fish to put in itTri-colored Heron with fish (Phil Lanoue)

Credits: Phil Lanoue (1, 7); Dan Pancamo (2); Keith Salvesen (3); Woody Bracey (4); Bruce Hallett (5)