What are blackburnian warblers?

Some articles on blackburnian warblers, warbler:

Blackburnian Warbler - Description
... Blackburnian Warblers are around 11 to 13 cm (4.3 to 5.1 in) long, with a 20 to 22 cm (7.9 to 8.7 in) wingspan, and weigh 8 to 13 g (0.28 to 0.46 oz) ... In summer, male Blackburnian Warblers display dark gray backs and double white wing bars, with yellowish rumps and dark brown crowns ... It is the only North American warbler with this striking plumage ...

Famous quotes containing the word warblers:

    I suffered for birds, for young rabbits caught in the mower,
    My grief was not excessive.
    For to come upon warblers in early May
    Was to forget time and death:
    Theodore Roethke (1908–1963)