For faster navigation, this Iframe is preloading the Wikiwand page for Christmas Bird Count.

Christmas Bird Count

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Christmas Bird Count" – news · newspapers · books · scholar · JSTOR (August 2018) (Learn how and when to remove this template message)

The Christmas Bird Count (CBC) is a census of birds in the Western Hemisphere, performed annually in the early Northern-hemisphere winter by volunteer birdwatchers and administered by the National Audubon Society. The purpose is to provide population data for use in science, especially conservation biology, though many people participate for recreation. The CBC is the longest-running citizen science survey in the world.[1]

History

Frank Chapman, who first proposed the Christmas Bird Count.

In the 19th century, many North Americans participated in the tradition of Christmas "side hunts", in which they competed at how many birds they could kill.[2] In December 1900, the U.S. ornithologist Frank Chapman, founder of Bird-Lore (which became Audubon magazine), proposed counting birds on Christmas instead of killing them.

On Christmas Day of that year, 27 observers took part in the first count in 25 places in the United States and Canada. The participants counted 18,500 birds in 90 species.[2] Since then the counts have been held every winter, usually with increasing numbers of observers. The 101st count, in the winter of 2000–2001, involved 52,471 people in 1,823 places in 17 countries (but mostly in the U.S. and Canada). During the 113th count (winter 2012–2013), 71,531 people participated in 2,369 locations. The National Audubon Society now partners with Bird Studies Canada, the Gulf Coast Bird Observatory of Texas (responsible for CBCs in Mexico), and the Red Nacional de Observadores de Aves (RNOA, National Network of Bird Observers) and the Instituto Alexander von Humboldt of Colombia.[citation needed]

The greatest number of bird species ever reported by any U.S. location in a single count is 250, observed on December 19, 2005, in the Matagorda County-Mad Island Marsh count circle around Matagorda and Palacios, Texas.[3] The greatest number of bird species ever reported by a CBC circle in the world is 531, observed on December 21, 2013, in the Cosanga-Narupa count (previously known as the Yanayacu count) on the eastern slope of the Andes in Ecuador.[4]

Methods

Each individual count is performed in a "count circle" with a diameter of 15 miles (24 kilometres).[5] At least ten volunteers, including a compiler to manage things, count in each circle. They break up into small parties and follow assigned routes, which change little from year to year, counting every bird they see. In most count circles, some people also watch feeders instead of following routes.

Counts can be held on any day from December 14 to January 5 inclusive.

The results, providing data on winter ranges of birds, are complementary to those of the Breeding Bird Surveys.

See also

References

  1. ^ "Annual OKC Christmas Bird Count set Saturday". The Oklahoman. Photography by Steve Gooch. Oklahoma City, Oklahoma: The Oklahoma Publishing Co. December 13, 2015. p. 12B. Retrieved August 27, 2018 – via Newspapers.com.((cite news)): CS1 maint: others (link)
  2. ^ a b Bartlett, Colin (January 8, 2005). "Marine bird numbers on the decline". Birding. The Star. Nanaimo, British Columbia, Canada: Nanaimo Daily News. p. A19. Retrieved August 27, 2018 – via Newspapers.com.
  3. ^ "Mad Island Marsh Christmas Bird Count" (Press release). The Nature Conservancy. September 29, 2008. Archived from the original on November 2, 2008.
  4. ^ https://www.audubon.org/content/114th-cbc-central-and-south-america-regional-summary 114th CBC Central and South America Regional Summary
  5. ^ "Christmas Bird Count Compiler Resources". National Audubon Society. January 8, 2018. I'd like to set up a new Christmas Bird Count circle, what do I do?. Retrieved August 26, 2018.

Further reading

{{bottomLinkPreText}} {{bottomLinkText}}
Christmas Bird Count
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install
{{::$root.activation.text}}

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!


Your input will affect cover photo selection, along with input from other users.

X

Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?