Search results
Results from the WOW.Com Content Network
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.
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
Flocks of black birds have been spotted in backyards and parks over the past few weeks in the Triangle, causing many of us to do a double take when we leave our homes or pass a large, grassy field.
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 ...
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 ...
Migration by this bird is highly variable, probably related to food supply. Large numbers may move south in some years; hardly any in others. This species is one of a few species that are considered "irruptive winter finches" because of the high variability of their movements based on the success of crops from year to year. [10]