Note: The Calliope Hummingbird is the smallest type of hummingbird in the United States and Canada. U.S./Canada Population Estimate: 4.5 million sedentarius (as its name suggests) remains in the U.S. Note: Even though the Allen's Hummingbird only breeds in a narrow strip along coastal Oregon and California, there are two subspecies Selasphorus sasin sasin and Selasphorus sasin sedentarius. Threats: Habitat loss, cat predation, possibly climate change Note: The Rufous Hummingbird breeds as far north as southeastern Alaska - the northernmost breeding range of any hummingbird. U.S./Canada Population Estimate: 19 million Note: Like many hummingbirds of mountainous areas, the Broad-tailed Hummingbird can enter torpor, a slowed metabolic state, on cold nights in order to maintain a body temperature of roughly 54° Fahrenheit. Threats: Cat predation, possibly climate change Note: They breed in the Southwest, but Costa's Hummingbirds have been spotted several times in the Pacific Northwest and have even ventured as far as Alaska and British Columbia. It now nests north to southern British Columbia. Note: The breeding range for the Anna's Hummingbird was originally exclusive to northern Baja California and southern California however, this bird's range has expanded thanks to the planting of exotic flowering trees. U.S./Canada Population Estimate: 8.2 million Note: The Black-chinned Hummingbird's eggs are smaller than jellybeans! U.S./Canada Population Estimate: 7.7 million Note: Ruby-throated Hummingbirds have become accustomed to urbanization and have been known to nest in surprising locations, including loops of extension cords, wires, and chains. U.S./Canada Population Estimate: 34 million This is in contrast to many other hummingbirds that perform courtship displays away from nests. Note: Male Lucifer Hummingbirds visit females during the breeding season, performing courtship displays at the females' nests. and Canada it weighs about three times more than the Ruby-throated Hummingbird.Ĭonservation Status: PIF Yellow Watchlist Note: The Blue-throated Mountain-gem is the largest nesting hummingbird in the U.S. Note: At 420 to 1,200 beats per minute, the Rivoli's Hummingbird has one of the highest vertebrate heartrates on record. Threats: Habitat loss, possibly climate change Our taxonomic list includes all regularly occurring types of hummingbirds in the continental United States and Canada. Our Listįor the purposes of this list, we've used Partners in Flight (PIF) population and conservation data exclusive to the United States and Canada, which do not reflect global numbers for many of these species, along with data from the Cornell Lab of Ornithology. To help these and other bird species, American Bird Conservancy employs a multipronged conservation approach that includes protecting birds from agricultural pesticides, promoting responsible cat ownership, working to decrease glass collisions, and improving habitat management. The International Union for Conservation of Nature lists 28 hummingbird species, or roughly 8 percent, as Endangered or Critically Endangered.
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