BLACK-WHISKERED VIREO

December 17, 2015 by Rolling Harbour

BLACK-WHISKERED VIREO

There are 8 vireo species recorded for Abaco. The most common is the ubiquitous Thick-billed Vireo Vireo crassirostris – the only permanent resident vireo – whose cheery chirp is part of the background of bird song heard daily all over the island. The only other species you are likely to encounter without going out of your way is the summer resident BLACK-WHISKERED VIREO Vireo altiloquus, which breeds on Abaco. The other 6 are the White-eyed, Yellow-throated, Blue-headed, Warbling, Philadelphia, and Red-eyed Vireo. Of these, the first 2 are quite rare winter residents; and the other 4 are considered to be transients.

The BWV’s song is similar to the Thick-billed Vireo, but (luckily) identifiably different. I’m not a great one for phonetic attempts at turning a bird call into a human sentence of the ‘Quick!-come-to-pick-up-a-brick’ and the ‘Skin-me-a-nice-bit-of-bonefish’ type. The Black-whiskered Vireo’s song has been described as sounding like ‘Whip, Tom Kelly’. But not to me. See what you make of it…

Brian Cox / Xeno-Canto

As with other vireo species, the BWV has a stout bill, a feature that helps to distinguish vireos from the many thin-billed warbler species on Abaco. The main signifiers are found on this bird’s head: the dark stripe right through the eye; the long white eyebrows; and the noticeable black lines – the ‘whiskers’ – on the sides of the neck. Other identification pointers are the pale underside with a yellow tinge to the flanks and undertail; and the red eyes (the red-eyed vireo, a very similar bird, lacks the whiskers).

Black-whiskered vireos feed mostly on insects in trees, bushes and undergrowth. They can sometimes be seen hovering while they forage. They also vary their diet with small quantities of berries. Here are two great shots of a mother BWV feeding a very large chick with a berry, followed by some vile insect.

Image Credits: Bruce Hallett, Tom Shelley, Charlie Skinner, Charmaine Albury, Erik Gauger

CLAPPER RAILS ON ABACO, BAHAMAS

December 10, 2015 by Rolling Harbour

ABACO BIRDS… THAT RUN LIKE THE CLAPPERS

That is, essentially, because they are indeed Clappers. Rallus longirostris to be precise, or Clapper Rails. There are 4 rail species on Abaco, the Clapper being a permanent resident and not particularly uncommon. The others are the Virginia Rail and the Sora, both winter residents and less common (or in the Sora’s case, perhaps more furtive and less easy to find); and the Black Rail, which is generally agreed to be a ‘hypothetical’ for Abaco. That means they are believed to exist on Abaco but there are no confirmed sightings let alone any photos of one. However, last summer while we were taking a truck into the backcountry of South Abaco to locate hard-to-find birds for “The Birds of Abaco” book, the distinctive call of a Black Rail call was heard independently by two people on two different days in two different locations. I’ve heard another report since then. So they are out there somewhere, but keeping their heads down. The first to find one will have a considerable avian scoop!

Let’s start with some fabulous photographs by Tom Sheley. We used the first one in the book. By being patient, Tom managed to capture this bird having a quality preening session. Here are 4 shots from the sequence, including a rare one of the bird calling. To get the full glory of the detail, click on each image twice.

Clapper Rails 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. You may come across one foraging secretively in the mud. Although they can both swim and fly, they prefer to keep both feet on the ground.When running, these rails look endearingly comical.

It almost goes without saying nowadays, but the biggest threat to these rather charming inoffensive birds is habitat loss. That is to say, mankind. 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.

“TO RUN LIKE THE CLAPPERS”. This phrase seems to be fairly recent, probably dating from early in WW2. Some suggest it is a rhyming slam 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.

STOP PRESS Uli Nowlan has sent her photo of a Clapper Rail, taken at the ponds north of Treasure Cay – a reminder that there is good birding to be done in that area of North Abaco – the bird action is not confined to South Abaco below MH…

Photo credits:Tom Sheley, Sandy Walker, Erik Gauger and Becky Marvil – plus Uli Nowlan

The Clapper Rail features in “The Delphi Club Guide to the Birds of Abaco” by Keith Salvesen pp 80 – 81

CUBAN PEWEE

November 23, 2015 by Rolling Harbour

CUBAN PEWEE: NATURE’S LEAST SCARY TYRANT

The CUBAN PEWEE Contopus caribaeus bahamensis, also known as the Crescent-eyed Pewee (see photos for details), is a tyrant. At 6″ long , the smallest tyrant you are likely to encounter in the Bahamas, but undoubtedly a member of the family Tyrranidae. These are the flycatchers, and include the larger LA SAGRA’S FLYCATCHER and the still larger Loggerhead and Gray Kingbirds. The Cuban Pewee is permanently resident on Abaco, and can be found in both pine woods and coppice. When returning to its perch after a flycatching sortie, this bird gives a characteristic flick of the tail.

The little bird below was in the edge of the coppice bordering the long sandy beach at Casuarina. Bruce Hallett, in his essential book ‘Birds of the West Indies…’ notes that Cuban Pewees are ‘usually approachable’, so I decided to test this out. I was about 20 feet from the bird when I first saw it. By sliding one foot forward in the sand and pausing before moving the other foot, I got to within 5 feet of the bird, while it watched my approach with apparent indifference. Unlike some creatures, it did not seem discomfited by eye-contact. It responded when I made a faint clicking sound by rather sweetly putting its head on one side. Then it began to fidget slightly – possibly feeling camera-shy. So I shuffled slowly back so as not to disturb it in its own territory.

The close-ups at the end clearly show the tiny hooked tip at the end of the upper beak – I imagine this somehow relates to the business of catching flies. Like other flycatchers, the Cuban Pewee has very distinctive whiskers around the base of the beak – again I presume this assists with feeding in some way, perhaps helping to sense the approach of an insect. Any expert views welcome via the comment box.

It’s occasionally tempting to anthropomorphise such close encounters in terms of imputed human / creature empathy. Much best to resist that. But as I withdrew, leaving this little bird undisturbed on its branch, I did experience a strange feeling of… [I must interrupt myself here. I’m a lawyer, so that’s quite enough of that sort of nonsense]

SNOWY EGRETS ON ABACO

November 9, 2015 by Rolling Harbour

‘REMARKABLE FEET’: SNOWY EGRETS ON ABACO

SNOWY EGRETS (Egretta thula) are small white herons of the Americas, similar to the European Little Egret. The first thing you may notice about them is that they have remarkable bright yellow feet. This distinguishes these birds from all other egret and heron species.

Young Snowy Egrets often have yellow markings higher up on their legs.

The feet are so bright that they are often visible underwater.

Snowy Egrets eat fish, crustaceans, insects and small reptiles. They have 3 main foraging tactics: (1) Standing still in or on the edge of water to ambush prey (2) Stalking prey in shallow water, often running or shuffling their feet to flush out prey (3) “Dip-fishing” by flying low over water.

In breeding season, Snowy Egrets grow beautiful plumes – “bridal plumage”. At one time these were in great demand as adornments for women’s hats (as with flamingos, parrots and many other decorative species). This reduced the population of the birds to dangerously low levels, from which they have now recovered. Their IUCN rating is now ‘Least Concern’.

Contemplating the next meal… one of Sandy Walker’s excellent Abaco photos taken this winterPhoto Credits: Sandy Walker, Woody Bracey, Tony Hepburn, Wiki

CUBAN EMERALD HUMMINGBIRD

September 22, 2015 by Rolling Harbour

A CUBAN EMERALD HUMMINGBIRD AT DELPHI, ABACO

Mostly, the Cuban Emeralds at Delphi spend their days perching briefly on twigs before zooming like tiny green rockets to their next appointment – an inviting sugar-water feeder, a promising flower or maybe yet another tempting twig. Sometimes, pairs will put on an acrobatic mid-air display, flitting around each other at high speed, chittering, before disappearing into the coppice together. Avian speed-dating. Occasionally, they are more contemplative. Emeralds may be quite hard to spot in amongst the green leaves, but often they are there, quietly watching you go by. Here is one that stayed put when I stopped to admire it.

I’m keeping an eye on you…

I’ll tuck my wing in neatly if you are going to take pics of me

Uh-oh! Close-ups. This is my better side.

That’s enough, human. I’ve stopped the posing. Now push off and leave me alone.

In close-up, the feathers look like tiny iridescent pine needle fans

BLUE-GRAY GNATCATCHERS: AN ABACO GALLERY

May 26, 2015 by Rolling Harbour

“STRIKE THE POSE”: BLUE-GRAY GNATCATCHERS ON ABACO

Credits: Becky Marvil (1,2,3,4,5), Tom Sheley (6,7,8), Charlie Skinner (9,10), Bruce Hallett (11)

REDDISH EGRET ON ABACO (1): HUNTER IN BREEDING COLOURS

April 10, 2015 by Rolling Harbour

“HANDSOME BIRD, BLUE EYES, LIKES FISH, SEEKS MATE…”

REDDISH EGRET ON ABACO (1)

Reddish Egrets come in two colour schemes, reddish and pure white; and both are available on Abaco. ID hint – among the 10 heron and egret species found on Abaco, these are the only ones with a black tip to the beak. In March, these birds are thinking about fish. They do that every day of the year. But they are also thinking about finding a mate. The colouring of the males intensifies, and in particular the greyish-pinkish base of its beak turns a bright ‘hi babe, how are you doing’ pink. The male RE in this post is resplendent in his breeding plumage. We encountered this RE at Crossing Rocks in the brackish pond area on the opposite side of the highway to the bonefishing jetty. This in an excellent place to check out for herons, egrets and other wading birds such as yellowlegs. The island is at its thinnest point here, with the hard dry land over which the highway passes just a few yards across. On either side it’s basically water, mangroves, and other wetland plants. The RE noticed us at the edge of the pond and put on a little display. This is unlikely to have been a ‘come on’… Conceivably, he wanted to show off his distinctive ‘bad hair day’ styling. More plausibly, he was probably put out by having his fishing disturbed. He wasn’t diverted for long, though, and soon got back to business hunting fish. Sometimes he would stand stock still, poised for a rapid strike into the water with that lethal beak. This is the RE’s classic fishing method, the static hunt. However, there are times for being proactive and chasing down the prey. While bonefishing out on the Marls, I have seen this done from a distance, especially by the white RE morphs. They splash about near the edge of the mangroves, moving back and forth, lifting their long legs high in the vegetation as they hunt down their small silver snacks. Our Crossing Rocks RE was suddenly on a mission…We had to tear ourselves away from this performance, grateful to have seen it at such close quarters. However we went back a few days later while on a birding trip to the pond at Gilpin Point. But that’s a post for another time…

REDDISH EGRETS (WHITE MORPH)

All photos RH; cheers to Woody Bracey for stopping the truck here during our warbler expedition!

DOWITCHERS FOR ABACO TWITCHERS

February 17, 2015 by Rolling Harbour

DOWITCHERS FOR ABACO TWITCHERS

(THE LONG AND THE SHORT OF IT…)

Long-billed (Limnodromus scolopaceus)? Or Short-billed (Limnodromus griseus)? Which one is that over there? No, not there. There! For Abaco, the answer is very easy. The SBD is a common winter resident, whereas the LBD is an occasional casual visitor, recorded rarely and irregularly in the Northern Bahamas. So if you are looking at a Dowitcher, it’s 98% certain that’s it’s an SBD. Which is lucky – they are so similar that telling them apart is a complex ID challenge, even if seen together! Until 60 years ago they happily existed as one species until the avian powers-that-be decided to prise them apart and award them separate species status. All the birds featured here are Abaco SDBs, with one exception… More on the comparisons and differences below.

The Dowitcher’s bill is an extremely effective instrument for probing deep into low water and mud. The rapid stabbing for concealed invertebrates has been vividly described as being ‘like a sewing-machine’. A ‘Dowitcher Stitcher’. So to speak.

HOW DID THE DOWITCHER GET ITS NAME?

I had assumed that the strange name for these birds was onomatopoeic, in the same way that a Killdeer is supposed to call “Kill…Deer”. And a Bobwhite, an interrogative “Bob…White?”. When I tried to check this online, I found that the usually valuable primary sources for bird info were silent on the topic. In the end, I tracked down a Merriam Webster entry that simply said “probably of Iroquoian origin; akin to Oneida tawístawis. First Known Use: 1841”. Which left me better informed, but no wiser…

THERE’S A BUNCH OF SHOREBIRDS OVER THERE – WHAT DO SBDs SOUND LIKE?

Phoenix Birder / Xeno Canto

In the header image, the bird is foraging in shallow water. In deeper water or with softer mud, SBDs will plunge their bills in to the hilt

SHORT OR LONG – HOW ON EARTH DO I TELL?

1. HELPFUL(ISH) WAYS

On Abaco, if you see a Dowitcher the overwhelming likelihood is that it’s a SBD
The species prefer different habitats, with the LBS preferring freshwater even in coastal regions
The SBD prefers coastal areas, shorelines and brackish / muddy ponds
The SBD’s call is said to be “mellower” than the LDB – though unless you have heard both for comparison, that’s not a very useful identifier.
The body shapes are apparently subtly different, in ways I personally can only begin to guess
In breeding plumage, the species have perceptible colour / pattern differences. (If you have binoculars?)

2. CONFUSING FACTORS

LBDs may occasionally join SBDs that are foraging on open tidal flats
Actual bill length may not help, there’s an overlap – some SBDs may have longer bills and vice versa.
There are theories about bill-length / head size comparison as a field ID method. Do they work? As if!
Winter plumage of both species is very similar (grey). Both are only on Abaco in winter. Go figure.

DOES THE DOWITCHER HAVE ANY PRACTICAL APPLICATION?

Yes! In Scrabble you can form a stonking 315 words from those 9 letters, all permitted under Scrabble rules (though not my own house rules, which forbid ridiculous 2 and 3 letter words that sound invented for the purpose of winning Scrabble). Apart from the full 9 letter original, there’s one 8 letter word – ‘witherod’, a type of viburnum plant; and 13 words of 7 letters, of which I’d say 8 are in common though not everyday usage. I’ll leave you to work out the remaining 301 words…

DO YOU HAVE ANY LBD PHOTOS TAKEN ON ABACO?

I surely do. Woody Bracey photographed a pair of dowitchers together on Abaco, one SBD and one LBD. But even though this looks a pretty straightforward comparison of bill length, colouring and marking, by now I’m now so confused that I’m beginning to wish the two species could be happily reunited into one…

Credits: Bruce Hallett, Tom Sheley, Woody Bracey, past researches, the usual bird info suspects

MERLINS: FIERCE LITTLE FALCONS

January 22, 2015 by Rolling Harbour

FIERCE LITTLE FALCONS: MERLINS ON ABACO

Merlins (Falco columbarius) are fierce small falcons that are fast and agile in flight. On Abaco, they are fairly common winter residents – though finding one and managing to photograph it may take a bit of doing. And maybe a dose of luck. The ‘columbarius‘ part of their taxonomy reflects their colloquial name ‘Pigeon Hawk’. Merlins are found throughout much of the northern hemisphere. They are classified as a New World species and an Old World / Eurasian subspecies, F c aesalon. Some argue for two distinct species, the gene pools of the two versions apparently having parted company ten of thousands of years ago. The birds aren’t overly bothered by the debate.

Merlin World Range Map: yellow = summer, blue = winter

HOW DO MERLINS DIFFER FROM AMERICAN KESTRELS (AMKE)?

Slightly larger and notably heavier (thus having more speed and endurance in flight)
Different colouring, e.g. lacking the indicative reddish-browns of the AMKE
Distinctive tail-barring as against black ends to the tail feathers with a white fringe
Unlike the AMKE they don’t hover, but close in directly on the small birds that are the main prey, often flying very low to surprise the victim.

For comparison: Merlin in South Abaco, American kestrel at Sandy Point American Kestrel, Abaco (Keith Salvesen)

SO JUST HOW FIERCE ARE MERLINS?

Formidable! If you are a small or even medium-sized bird, you need to keep your wits about you. Merlins are largely ‘omni-habitat’ within their range, which includes open country, shrubland, light forest, and grasslands. They are fast, agile and strong. They can fly high, at medium height or at ground level, and are expert in surprise attack and rapid pursuit of prey. If you are a large bird of prey – a red-tailed hawk, perhaps – they may attack you with ferocity. They may not actually be trying to nail you, but to get you out of their territory and their catchment area.

Most of a merlin’s prey is taken in flight, and their speciality is ‘tail-chasing’ terrified birds. Breeding pairs may hunt cooperatively, with one bird flushing prey from cover into the open for its mate to… well, you get the picture – they are clever too. They may even pursue birds that have been flushed out by another bird of prey in the vicinity.

MERLINS AND PHOTOGRAPHERS

This is a slightly fraught relationship, because Merlins do not always pose as one might wish. Sometimes they are hard to see, being fairly well camouflaged unless they choose to ‘go out on a limb’.

And sometimes they don’t play by the rules relating to light and focus, making a clear shot difficult

FALCONRY AND MEDIEVAL HISTORY

Merlins were popular birds in medieval English falconry, and according to the 1486 Boke of Seynt Albans, the ‘Marlyon’ was considered the appropriate hunting bird for a lady. This book contained an essay on hunting attributed to Dame Juliana Berners, the prioress of a Priory near St Albans, who, game lady that she must have been, also contributed to one of the earliest treatises on fishing, ‘Fysshynge wyth an Angle‘ (hence, angling).

FURTHER HISTORICAL DIGRESSION (feel free to skip to final para)

While reading up further about Dame Juliana, I came across (wiki-tnx) a wonderful ranking for birds of prey matched to status that I hadn’t encountered before. Here’s the list, from Emperor to Knave / Servant. A Tercel was / is a male falcon, especially a Peregrine or Gyrfalcon. A Musket is a sparrowhawk.

Falconry Table

The Boke of Seynt Albans also contains list of collective nouns for animals and birds, many familiar today such as “gaggle of geese”. There are also humorous collective nouns for different professions, such as a “diligence of messengers”, a “melody of harpers”, a “blast of hunters”, “a subtlety of sergeants”, and a “superfluity of nuns”…

Merlins are still trained for hunting smaller birds; and because of their speed and agility they are used in falconry displays. Despite changing habitat, and a perceptible dip in population from the use of pesticides now banned (such as DDT), the Merlin seems to be holding its own very well 5 centuries after the Boke was written.

AND FINALLY… AUDUBON’S HANDSOME MERLINS

Credits: Becky Marvil (1 & 7); RH (2); Rhonda Pearce (3); Craig Nash (4 & 5); Gerlinde Taurer (6); Prairie Boy (8) wiki – not taken on Abaco, but I liked it; Dame Juliana Berners (1486); Magpie Pickings

THICK-BILLED VIREOS ON ABACO

December 13, 2014 by Rolling Harbour

THICK-BILLED VIREOS: ABACO’S ONLY PERMANENT RESIDENT VIREO

Unlike the other 7 vireo species found on Abaco seasonally or as transients, the Thick-billed Vireo Vireo crassirostris is an ever-present permanent resident of the coppice and scrub; and their unmistakeable repeating song can be heard almost everywhere.

Although TBVs are very easy to hear and track to a general area of coppice, I find actually seeing the bird creating the noise quite hard – let alone getting a clear camera shot. They always seem to be lurking several feet further away, deeper in the foliage, than the sound suggests.

Paul Driver / Xeno Canto

Thick-billed Vireo, Abaco Bahamas.Tom Sheley

The main signifiers for this species, which in combination distinguish the TBV from the other vireo species on Abaco, are:

Two white wing bars
Yellow patch – usually quite prominent – between eye and beak
Thick bill – which immediately rules it out of being one of the 37 warbler species on Abaco…

Thick-billed Vireo, Abaco (Becky Marvil 2).jpg

There are marked colour variations in the species according to maturity, season and to an extent gender (though m & f are quite similar). Here’s one that is causing wing-bar confusion by only showing traces. It also has quite dark upper parts.

This is a very yellow TBVWhereas this one has rather anaemic coloration Thick-billed Vireo, Abaco Bahamas .Tom Sheley Finally, this pretty TBV is very delicately marked

VIREO PAGE

BLACK-WHISKERED VIREO

PHILADELPHIA VIREO

Credits: Tom Reed (1), Craig Nash (2), Gerlinde Taurer (3), Bruce Hallett (4, 8), Tom Sheley (5, 9), Becky Marvil (6), Alex Hughes (7), Tony Hepburn (10); Paul Driver / Xeno Canto

THE BIRDS OF ABACO

The Definitive Guide to the Birds of Abaco, Bahamas

Tag Archives: Keith Salvesen Author

BLACK-WHISKERED VIREO