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Internet Guide
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BIRDNET provides information about ornithology, the scientific study of birds. The site is a service of the Ornithological Council, a public information organization established and supported by eleven North American professional ornithological societies. [Information of the supplier]
www.nmnh.si.edu/BIRDNET/
eBird provides a simple way for you to keep track of the birds you see anywhere in North America. You can retrieve information on your bird observations, from your backyard to your neighborhood to your favorite bird-watching locations, at any time for your personal use. You can also access the entire ... [Information of the supplier, modified]
www.ebird.org/
Das Buch „Migration of birds“, das zum ersten Mal 1935 erschienen ist, wird auf dieser Webseite in der überarbeiteten Version von 1998 als Online-Buch zugänglich gemacht. Thema ist der Vogelzug mit Schwerpunkt Nordamerika, u.a. werden auch Informationen zu Kurzstreckenziehern, Langstreckenziehern, ... [Redaktion vifabio]
www.npwrc.usgs.gov/resource/birds/migratio/index.htm
The Bird Guide is part of a comprehensive offering of the Cornell Lab of Ornithology and presents a taxonomic database of the most abundant bird species of North America. A search in the database can be made with English or scientific names; browsing in the species list is only possible with English ... [Editorial staff vifabio]
www.birds.cornell.edu/AllAboutBirds/BirdGuide/
Welcome to the North American Breeding Bird Survey (BBS) web site. The BBS is a cooperative effort between the U.S. Geological Survey's Patuxent Wildlife Research Center and the Canadian Wildlife Service's National Wildlife Research Centre to monitor the status and trends of North American bird ... [Information of the supplier]
www.pwrc.usgs.gov/bbs/
CASA is a multi-national, web-based project with the goal of increasing the quality and quantity of research on the reproductive biology and natural history of birds in the Americas. CASA aims to encourage the study of nesting biology by disseminating information, identifying gaps in our knowledge, and ... [Information of the supplier]
avesamericanas.lifedesks.org/
The Birds of North and Middle America Checklist is the official source on the taxonomy of birds found in North and Middle America, including adjacent islands. This list is produced by the North American Classification Committee (NACC), an official committee of the American Ornithologists' Union. The ... [Information of the supplier]
checklist.aou.org/
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