Blackpoll Warbler

One of the most common birds of the northern boreal forest, the Blackpoll Warbler flies all the way to South America to spend the winter.

The song of the male Blackpoll Warbler is one of the highest-pitched of all birds. Part of the fall migratory route of the Blackpoll Warbler is over the Atlantic Ocean from the northeastern United States 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.