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It is migratory, ranging from mid-Alberta to North Carolina during the breeding season, and from just south of the Canada–United States border to Mexico during the winter. The only finch in its subfamily to undergo a complete molt, the American goldfinch displays sexual dichromatism: the male is a vibrant yellow in the summer and an olive ...
A common pattern in North America is clockwise migration, where birds flying North tend to be further West, and flying South tend to shift Eastwards. Many, if not most, birds migrate in flocks. For larger birds, flying in flocks reduces the energy cost. Geese in a V formation may conserve 12–20% of the energy they would need to fly alone.
They nest in large conifers. They move to lower elevations in winter. Northernmost breeding birds migrate south, as do some birds throughout the range of the species; many birds are permanent residents, however. Some non-breeding birds winter as far south as central interior Mexico. These birds forage in trees, sometimes in ground vegetation.
Bird migration is on the rise, and so are window collisions. As temperatures slowly drop in Chicago, 300 million to 400 million birds are crossing the continent heading south to their nesting ...
Hurricane Lee is a powerful storm churning through the Atlantic. The storm has intensified rapidly from Thursday to Friday. As of Friday night, it measures a Category 3 storm with maximum ...
The house finch (Haemorhous mexicanus) is a North American bird in the finch family. It is native to Mexico and southwestern United States , but has since been introduced to the eastern part of North America and Hawaii; it is now found year-round in all parts of the United States and most of Mexico, with some residing near the border of Canada .
Milwaukee is under "high" migration alert Wednesday night, with more than 27,000 birds expected to migrate over the city. Kakatsch said colder weather usually drives an upswing in migration in the ...
In all Virginia species, males are polygamous and have elaborate courtship displays. These heavily built birds have legs feathered to the toes. Most species are year-round residents and do not migrate. Four species have been recorded in Virginia. Wild turkey, Meleagris gallopavo; Ruffed grouse, Bonasa umbellus