BLACKPOLL WARBLERS ON ABACO: UNCOMMON TRANSIENTS


Blackpoll Walbler dendroica_striata_mn-cephas-wiki

BLACKPOLL WARBLERS ON ABACO: UNCOMMON TRANSIENTS

The Blackpoll Warbler Setophaga striata is a “TR3” on Abaco. Which is to say, the species is classified as an uncommon transient in its migration, and as such it is rarely seen on Abaco. Apart from anything else the window of opportunity of seeing one in the Fall or in Spring is limited by the length of time they pause on Abaco to catch their breath. Also, they are small birds that do not draw attention to themselves. They hang around in the coppice foliage rather than parading out in the open; and their call is a tiny ‘tsip‘ sound (as with so many other small birds…). 

Blackpoll Warbler, Man-o-War Cay, Abaco (Charmaine Albury)

Fortunately, on Abaco’s warbler magnet Man-o-War Cay, alert birder Charmaine Albury was out and about with her camera to record a sighting. I should say that during the writing of THE BIRDS OF ABACO, I never managed to obtain a single image – however poor – of a Blackpoll Warbler actually taken on Abaco (a qualification for inclusion) from any of the many sources I used. So sadly, this pretty warbler does not feature in the book.

Blackpoll Warbler, Man-o-War Cay, Abaco (Charmaine Albury)

The summer breeding area for blackpolls covers northern North America from Alaska through most of Canada, the Great Lakes region and New England. In the fall, they fly South to the Greater Antilles and the northeastern coasts of South America. The summer and winter areas are very distinct, as the distribution map shows:

dendroica_striata_map-svg

Despite their diminutive size**, blackpoll warblers generally undertake their  long-distance migration – often over open water – non-stop or with a single stopover.  Their migration has been the subject of many scientific studies. One of the longest distance non-stop overwater flights ever recorded for a migratory songbird was made by a BLWA. Which all goes to explain why the species is so rarely seen along the migration route: unlike many migrating birds, they make few, if any, stops along the way.

Blackpoll Warbler, Man-o-War Cay, Abaco (Charmaine Albury)

Of the many stats I have read through, I chose one to demonstrate the stamina of these little birds. In one study, an number were fitted with tiny geolocators. These revealed an average migration journey of around 1600 miles, with the non-stop trip being completed in 3 days by at least one bird.

f1-medium

“Transoceanic migration by a 12 g songbird”

The maps above show blackpoll warbler migrations recorded for 5 birds in a study that indicates that, while a direct overwater route is preferred in the fall migration, the return journey in spring is more leisurely, and overland (it looks as though only 3 birds made it home).

The study quoted is by William V. DeLuca, Bradley K. Woodworth, Christopher C. Rimmer, Peter P. Marra, Philip D. Taylor, Kent P. McFarland, Stuart A. Mackenzie, D. Ryan Norris (

Blackpoll Warbler, Man-o-War Cay, Abaco (Charmaine Albury)

** I came across the statement that “The blackpoll warbler… attains the weight of a ball point pen”. I find this an unhelpful comparison. I know what is meant, but I find it hard to think of a ball of feathers in terms of a writing instrument. Maybe it’s just me? [Astute Reader: I’m afraid so…]

YOU MENTIONED THAT THEY GO ‘TSIP’. WHAT DOES THAT EVEN SOUND LIKE?

Credits: header image of a summer bird, Cephas; all other photos by Charmaine Albury, taken on Man-o-War Cay Abaco; birdsong Xeno-Canto / wikimedia commons

PRETTY PALMS: CHEERY WARBLERS ON SUNNY ABACO


220px-Palm_Warbler,_Indiatlatlantic

PRETTY PALMS: CHEERY WARBLERS ON SUNNY ABACO

Palm Warblers Setophaga palmarum are cheerful little birds. Keen feeders, foraging around on the ground, in the coppice, or where there are pines. They are one of only 3 warbler species that bobs its tail, not just when it’s happy but much of the time. Maybe it is happy much of the time. The other 2 species are the relatively familiar Prairie Warbler; and the vanishingly rare – on Abaco, at least – Kirtland’s Warbler, the avian Holy Grail for birdwatchers on the island. 

The male palm warbler in breeding plumage has a smart chestnut cap and what might be described as a ‘buttery’ BTM, to use a polite text-abbrev. The females are paler and have less yellow on them. The photos below were taken in March this year, mostly by Mrs RH (I can’t now recall who took what so I’ll give a general credit until she claims her ones). You’ll see the wide variety of types of place you might encounter one of these little birds. The last picture isn’t great as a photograph… but it’s a classic bit of acrobatic personal grooming.

CALL [audio http://www.xeno-canto.org/sounds/uploaded/HNJLXSFHYB/palm_warbler_callnotes_xc.mp3]

Palm Warbler, Abaco 7 Palm Warbler, Abaco 6 Palm Warbler, Abaco 5 Palm Warbler, Abaco 4 Palm Warbler, Abaco 3 Palm Warbler Abaco 2 Palm Warbler Abaco 1Thank you for admiring me…Palm Warbler, Abaco 9…now please excuse me if I scratch my ear for a moment…Palm Warbler, Abaco 8Header thumbnail image credit: Wiki

PROTHONOTARY WARBLERS ON ABACO, BAHAMAS: WHAT’S IN A NAME?


PROTHONOTARY WARBLERS ON ABACO, BAHAMAS

Janene Roessler has kindly sent news of a sighting yesterday of a prothonotary warbler on a feeder at Bahama Palm Shores, Abaco [Later addition] Now, with thanks to Ann Capling, here is that very warbler on the feeder –  a fine photo considering it was taken indoors through glass.Apparently there hasn’t been one recorded there since 2007. I know of one seen further south on the island near the Delphi Club in April 2010 (see photo and caption below). I’ve never seen one myself. It seems fitting to celebrate the news with a post about these little birds…

This very pretty species of warbler Protonotaria citrea is the only member of its genus. The male birds are very colourful, with the females and juveniles being a bit duller. In flight, the underside of their tails are white at the base, and dark at the tip Photo Credit Craig Nash (Peregrine’s Blog) This fantastic photo was taken on the main drive of the Delphi Club, Abaco

These warblers are native to the eastern US where they breed, wintering further south in the West Indies and Central & South America. Their nesting arrangements are unusual: “It is the only eastern warbler that nests in natural or artificial cavities, sometimes using old downy woodpecker holes. The male often builds several incomplete, unused nests in his territory; the female builds the real nest” where she lays 3 – 7 eggs. So either the male is cleverly creating decoy nests away from the real nest; or maybe he is showing typically male behaviour in starting several home DIY projects at once and not getting round to finishing any of them…

Female Prothonotary Warbler (wiki)

I can never cope with those phonetic descriptions of bird calls… So many small birds are described as going ‘tseep’ or ‘tweep’ or ‘seeep’, yet in practice sound different from each other. So here, courtesy of the admirable Xeno-Canto and recordist Don Jones, is how they sound in real life

Listed as of ‘Least Concern’ (except in Canada, where they are ‘endangered’), the sad fact is that like so many species PNs are declining in numbers due to habitat loss. They are also bullied by other birds, in particular the brown-headed cowbird; and the house wren with which they compete for nest sites.

And the cumbersome name? Although at one time known by the helpful name ‘Golden Swamp Warbler’, the bird was renamed after senior Roman Catholic church officials called PROTONOTARII whose robes were (are?) supposedly golden. For full but quite dull details click on the green word back there. Bizarrely, the wiki-link doesn’t seem to confirm the goldenness of the robes at all. I think I’ll vote for a return to the simpler description…

Male Prothonotary Warbler (wiki)

POST SCRIPT: By complete coincidence, the National Audubon Society posted this lovely PN picture on its Facebook page this very day, with the caption Start your Monday morning off right with this cute Prothonotary Warbler peeking out of a heart shaped tree hole! Have you seen any of these birds yet? Photo by Mark Musselman”