If trends continue, Partners in Flight estimates that the bird's current population could be reduced by half in less than 20 years. Although Allen's Hummingbird remains fairly common, its numbers have decreased by 83 percent in recent decades, according to Partners in Flight. sedentarius) stays in southern California. One group ( Selasphorus sasin sasin) migrates to central Mexico. There are two subspecies of Allen's Hummingbird, each with its own wintering destination. During the breeding season, female and male Allen's Hummingbirds occupy different habitats: Males establish territories within areas of coastal shrub, while females move into forest to build nests. Those that migrate depart their wintering grounds in early December, allowing them to arrive along the coasts of California and Oregon in January - just in time to enjoy the region's winter wildflowers. Photo by Keneva Photography/Shutterstock.Ĭompared to the springtime departures of other North America-bound migrants, Allen's Hummingbirds gets the worm. Migrant: Ruby-throated HummingbirdĪllen's Hummingbird. Learn more about the migratory patterns of common North American hummingbirds below. Upon arrival in the United States, Ruby-throated Hummingbirds can travel up to 20 miles a day, typically following their favorite early blooming flowers. Contrary to popular myth, hummingbirds do not migrate on the backs of geese or other birds, although they do sometimes travel in mixed flocks over water. Northward migration offers an escape from the tropics, where competition for food can be intense, while providing a seat at the table, so to speak, in the North, where summer food supplies are abundant. In late winter and early spring, they return north to breeding grounds in the United States and Canada. Many make this journey during the late summer and fall, spurred not by hunger or falling temperatures but by decreasing daylight hours. Like other birds, hummingbirds migrate south in search of flowers, insects, and other food sources.
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