This video from Canada says about itself:
Indigo bunting, Blackburnian warbler, stop on migration at my bird feeder
14 May 2013
My first sighting of Indigo bunting, Blackburnian Warbler, photos and video on their way North, Woodslee, Ontario.
From Wildlife Extra:
US songbirds are found to migrate with the wind
Millions of tiny songbirds, many weighing less than an ounce, migrate thousands of miles from North America to Central and South America each year. How they do it has been somewhat of a mystery, but now scientists have discovered how far they take advantage of prevailing wind patterns to save calories.
“Most of what we’ve known about migration routes comes from ducks and geese,” said Frank La Sorte, a Cornell Lab of Ornithology research associate and lead author of the paper in the Journal of Biogeography. “But terrestrial birds are much smaller and…
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