Black-throated Blue Warbler, in profile
Setophaga caerulescens
Black-throated Blue Warbler · Brooklyn Botanic Garden · 27 September 2025
A male Black-throated Blue Warbler in profile at the Botanic Garden at the end of September, slate-blue above and black through the face and throat. He breeds in the mountain forests of the Northeast and winters in the Caribbean, and passes through Brooklyn twice a year on the way.
The one mark hidden here is a small white square at the base of the wing, the "handkerchief", which both sexes carry and which is the only easy way to name the drab olive female - she looks so unlike him that the two were once described as separate species.
Birds, insects, plants and other wildlife, mostly from Brooklyn, with some from further afield.
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