Blackpoll Warbler  Dendroica striata
Blackpoll Warbler
Dendroica striata

One of the most common birds of the boreal forest, the song of the male Blackpoll Warbler is one of the highest pitches of all birds.
It is a most impressive migrant, as it will fly from the northeastern United States over the Atlantic Ocean to Puerto Rico, the Lesser Antilles, or northern South America.  This route averages 3,000 km (1,864 mi) over water, requiring a potentially nonstop flight of up to 88 hours.  To accomplish this flight, the Blackpoll Warbler nearly doubles its body mass and takes advantage of a shift in prevailing wind direction to direct it to its destination.
It breeds in low northern spruce forests and in alder thickets north of the tree line and Artic Circle, where it feeds on a variety of insects and spiders as well as pokeberries and few seeds.
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