
Setophaga caerulescens
John James Audubon, Birds of America (1827-1838). Public domain.
Showing primary migration corridor(s) for this species
The black-throated blue warbler (Setophaga caerulescens) is a small passerine bird of the New World warbler family. Its breeding ranges are located in the interior of deciduous and mixed coniferous forests in eastern North America. Over the cooler months, it migrates to islands in the Caribbean and Central America. It is very rarely found in western Europe, where it is considered to be a non-indigenous species. The black-throated blue warbler is sexually dimorphic; the adult male has a black face and cheeks, deep blue upperparts and white underparts, while the adult female is olive-brown above and light yellow below. Predominantly insectivorous, the black-throated blue warbler supplements its diet with berries and seeds in winter.
Source: Wikipedia
Other members of the new world warblers family recorded in North America — a useful place to start if you are not certain of your identification.
You don't need to spend a fortune. These four pairs will get you birding confidently on day one.
From phone adapters to dedicated rigs, here's what actually works for capturing birds in the field.