BAHAMA YELLOWTHROAT: AN ENDEMIC WARBLER


BAHAMA YELLOWTHROAT: AN ENDEMIC WARBLER

The BAHAMA YELLOWTHROAT (Geothlypis rostrata) is a resident breeder species of warbler endemic to the Bahamas, closely related to the migratory Common Yellowthroat. The other birds endemic to Abaco / Bahamas are the Bahama Swallow, BAHAMA WOODSTAR and ABACO PARROT

HABITAT Dense low scrub, usually in drier areas than used by wintering Common Yellowthroats. It builds a cup nest low in dense vegetation and lays two eggs. Like other yellowthroats it feeds on insects and other small invertebrates in low vegetation

THE 3 VARIETIES The adult Bahama Yellowthroat is 15 cm long with a large bill. There are 3 subspecies: G. r. rostrata on Andros and New Providence islands (uncommon to rare);  G. r. tanneri on Grand Bahama, Great Abaco and associated islands (common); and G. r. coryi on Eleuthera and Cat islands (common). The noticeable distinction between these 3 types seems to be in the forecrown colour (not one I myself would readily spot…)

DIFFERENCES FROM COMMON YELLOWTHROAT The Bahama Yellowthroat is slightly larger than wintering Common Yellowthroat and has a heavier bill and ‘slower, more deliberate movements’. Males have ‘more extensively yellow underparts, a larger facemask extending onto the nape, and in the case of coryi the distinctive yellow forecrown. Females have a grey wash to the head not shown by Common Yellowthroat’.

Bahama Yellowthroat (Adult female), Little Abaco

                                   

Photo credit ©Mike Danzenbaker  http://www.avesphoto.com

SONG Described as a loud wichety wichety wichety wich, similar to that of Common Yellowthroat, with the call a softer jip than that of Common Yellowthroat. This is meaningless to me – lots of warblery birds sound like that as far as I can make out. Here is a very short recording of a BY on Abaco courtesy of Xeno-Canto, but it’s not saying wichety to me – more like whee-hew 

Photo credit: Craig Nash 

Here’a short self-crediting video to illustrate the song of a Bahama Yellowthroat on Grand Cayman. There’s a hint of wichety there.

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