Enhancing the scientific value of the Christmas Bird Count

The Auk
By: , and 



The Christmas Bird Count (CBC), conducted by the National Audubon Society (NAS) since 1900, constitutes the longest-running and geographically most widespread survey of bird life in the Western Hemisphere. Starting with 25 count locations in its first year, the program has grown continuously ever since, with 20–30 locations currently being added annually. Each CBC consists of a tally of all birds detected within a circle 24.1 km (15 miles) in diameter, on a single day within a few weeks around Christmas (current allowable dates are 14 December through 5 January). More than 50,000 observers now take part each year, in close to 2,000 count circles spread across the U.S. and its territories, southern Canada, and, increasingly, Latin America.

Publication type Article
Publication Subtype Journal Article
Title Enhancing the scientific value of the Christmas Bird Count
Series title The Auk
DOI 10.1642/0004-8038(2005)122[0338:ETSVOT]2.0.CO;2
Volume 122
Issue 1
Year Published 2005
Language English
Publisher American Ornithological Society
Contributing office(s) Patuxent Wildlife Research Center
Description 9 p.
First page 338
Last page 346
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