black-capped chickadee, Poecile atricapilla ---------- Poecile atricapillus
carolina chickadee, Poecile carolinesis
mountain chickadee, Poecile gambeli
gray-headed chickadee, Poecile cincta ---------- Poecile cinctus
boreal chickadee, Poecile hudsonica ---------- Poecile hudsonicus
Mexican chickadee, Poecile sclateri
chestnut-backed chickadee, Poecile rufescens
The Audubon Society / D.A Sibley 2000
The Sibley Guide to Birds
... is the news that a paper by David & Gosselin has concluded that the grammatical gender of Poecile is masculine
, as a result, all Poecile species and subspecies names ending in '-a' (including our beloved Willow Tit) will, once again, revert to '-us'.http://gwentbirding.blogspot.com/2008_02_01_a...
Change the gender of Poecile to masculine, following David and Gosselin
(2008). Change the endings of the species names hudsonicus and cinctus.
Now David and Gosselin have published the note cited, proving that
by the code Poecile is in fact masculine