- 4.3–4.7 in - 7.9–8.3 in - 0.3–0.5 oz - Paruline à gorge
orangée (French) - Verdín pasajero (Spanish) - No other North
American warbler has an orange throat. - The Blackburnian
Warbler is territorial on its breeding grounds and solitary in
the winter. It forms flocks only during migration. - Although
the Blackburnian Warbler does not associate with other birds
while it is nesting, it will join foraging flocks of chickadees,
kinglets, and nuthatches after the young fledge. The warbler
will follow the mixed flock with its begging young. The begging
of the warbler chicks can even attract chickadees. - Breeds in
mature coniferous and mixed coniferous/deciduous forests. -
Winters in montane forests. Insects and spiders. - Clutch Size -
3–5 eggs - Egg Description - White or greenish white with brown
spots and blotches. - Condition at Hatching - Helpless with
tufts of down. Open cup of twigs, bark, plant fibers, and
rootlets held to branch with spider web. Lined with lichens,
moss, hair, and dead pine needles. Plac