Discount Wallpaper Biography
ne species, the Cattle Egret, was historically an African bird. In the 20th century this bird colonized North America and is now found throughout the lower 48 states of the United States The Cattle Egret is the only Old World bird to establish itself in North America in historical times without being introduced by man. As such, it is not marked as introduced on this list. Neither is the Glossy Ibis, which probably had a similar history.
The status of one bird on the North American list, the Ivory-billed Woodpecker, is controversial. Until 2005 this bird was widely considered to be extinct. In April of that year, it was reported that at least one adult male bird had been sighted in the Cache River National Wildlife Refuge in Arkansas.[4] This report however, has not been universally accepted, and the American Birding Association still lists the Ivory-billed Woodpecker as extinct.
The definition of the area covered by a list of "North American" birds is somewhat subjective. The original list published by the American Ornithologists' Union (AOU) in 1886 covered birds found in North America north of Mexico, and included Baja California, Bermuda and Greenland. In 1983, the area was expanded to include all of Mexico, Central America south through Panama, the West Indies and the Hawaiian Islands, while Greenland was dropped. This expansion more than doubled the number of birds on the AOU list. Other organizations, such as the American Birding Association (ABA), use a smaller area: the current ABA area includes the 49 continental states of the US, Canada, and the French islands of Saint-Pierre and Miquelon, plus surrounding waters.[7] It does not include Greenland, Bermuda, the Bahamas or the Hawaiian Islands.[7] This article is based on a checklist used by the ABA, which used by most field guides for North American birds, and is complete up to November 2010. Since the ABA follows the AOU on taxonomical matters, the AOU's list is used to settle questions of taxonomy.
ne species, the Cattle Egret, was historically an African bird. In the 20th century this bird colonized North America and is now found throughout the lower 48 states of the United States The Cattle Egret is the only Old World bird to establish itself in North America in historical times without being introduced by man. As such, it is not marked as introduced on this list. Neither is the Glossy Ibis, which probably had a similar history.
The status of one bird on the North American list, the Ivory-billed Woodpecker, is controversial. Until 2005 this bird was widely considered to be extinct. In April of that year, it was reported that at least one adult male bird had been sighted in the Cache River National Wildlife Refuge in Arkansas.[4] This report however, has not been universally accepted, and the American Birding Association still lists the Ivory-billed Woodpecker as extinct.
The definition of the area covered by a list of "North American" birds is somewhat subjective. The original list published by the American Ornithologists' Union (AOU) in 1886 covered birds found in North America north of Mexico, and included Baja California, Bermuda and Greenland. In 1983, the area was expanded to include all of Mexico, Central America south through Panama, the West Indies and the Hawaiian Islands, while Greenland was dropped. This expansion more than doubled the number of birds on the AOU list. Other organizations, such as the American Birding Association (ABA), use a smaller area: the current ABA area includes the 49 continental states of the US, Canada, and the French islands of Saint-Pierre and Miquelon, plus surrounding waters.[7] It does not include Greenland, Bermuda, the Bahamas or the Hawaiian Islands.[7] This article is based on a checklist used by the ABA, which used by most field guides for North American birds, and is complete up to November 2010. Since the ABA follows the AOU on taxonomical matters, the AOU's list is used to settle questions of taxonomy.
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