Christmas Bird Count


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Christmas Bird Count

December 14-January 6
The Christmas Bird Count, also known as CBC, is an international event sponsored annually by the National Audubon Society. Under a system that the society calls "citizen science," volunteers join a count that takes place on one day during the designated CBC period, December 14–January 5. Each group of volunteers, known as a Christmas Bird Count Circle, is assigned a specific geographic area and asked to record the number and species of birds they see. Each circle has a compiler, who organizes the volunteers and records the data that they gather according to a specific methodology. Counts take place in all 50 states, every Canadian province, parts of Central and South America, Bermuda, the West Indies, and Pacific Islands. The data gathered every year helps the Audubon Society and scientists worldwide to understand the status and distribution of bird populations in early winter.
The Christmas Bird Count began at the turn of the last century. At that time, people often competed during the holiday season to see who could shoot the most birds and game. Ornithologist Frank Chapman, an officer in the just-developing Audubon Society, proposed a new holiday tradition—a "Christmas Bird Census" that would encourage people to count birds rather than kill them. At the first count, birders in 25 North American locations spotted about 18,500 individual birds. During the 2006 count, nearly 58,000 volunteers tallied almost 70 million birds. Over the decades, generations of volunteers have supplied vital information for the longest-running database in ornithology.
CONTACTS:
National Audubon Society
700 Broadway
New York, NY 10003
212-979-3000; fax: 212-979-3188
www.audubon.org
References in periodicals archive ?
Johnsgard and Shane (2009), using 40 years of Christmas Bird Count records from 1968 to 2007, demonstrated abundance of Sandhill Cranes increasing during winter in Kansas during the two most recent decades compared to few or no birds the prior 20 years.
Also, consider volunteering for the annual Christmas Bird Count, part of a nationwide effort to track bird populations; this year the counting period begins Dec.
Dick Cannings, Christmas Bird Count coordinator of Bird Studies Canada, said, quoted by The Castlegar Source, "This is not just about having fun and counting bird - although that's an important part of it .
Many techniques are used to assess raptor populations such as the Breeding Bird Survey (BBS) and Christmas Bird Count (CBC) (Kirk and Hyslop, 1998); however, their effectiveness may be limited as raptors are secretive and widely distributed.
Those who do well and enjoy the count, Leonard said, can graduate to the more stringent Christmas bird count in the winter.
Some "citizen science" programs have existed for years, like the National Audubon Society's annual Christmas Bird Count, in which an average of 60,000 volunteer birders spend a day counting birds in specific areas.
Christmas bird count confirms some dramatic declines.
National Audubon Society Christmas Bird Count (CBC) data have been collected at Joshua Tree National Park once each winter since 1969 and at a second site immediately west of JTNP (Morongo Valley) since 1981.
Data from the Audubon Society's annual Christmas Bird Count (CBC) for the Rough-legged Hawk (Buteo lagopus) population in Colorado were analyzed for the years 1980 to 2000.
In December, as many as 50,000 birders will flock together for the 100th annual National Audubon Society Christmas Bird Count.
Another Adak holiday tradition is the annual Audubon Christmas bird count.
Duck hunting season ends December 5, and most species are still well represented (for the last five years, the annual Audubon Christmas bird count has averaged a hundred species at Tule Lake alone).