Great Backyard Bird Count

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The Great Backyard Bird Count (GBBC) is a citizen science project in ornithology. It is conducted annually in mid February. The event is supported by the Cornell Lab of Ornithology and the National Audubon Society. During this four-day event birdwatchers all around the world are invited to count and report details of birds in the area in which they live. Data is submitted online via a web interface, and compiled for use in scientific research.[1] The GBBC was the first citizen science project to collect bird sightings online and display results in near real-time.[2]


The GBBC was first launched in 1998 in USA. It is conducted around the second week of February.[3] Since 2013, the event has been observed by international bird watchers, and anyone can now participate in the event. Additional wildlife and conservation institutes around the world have also supported and participated.[4][5][6] A number of separate bird watch efforts have been coordinated so as to coincide with the GBBC.[7] In 2015 nearly half of known bird species worldwide were reported.[8]

Data collected during the event is subjected to verification by experts, in order to overcome potential shortcomings in the abilities of amateur participants.[9] Data resulting from the event has raised awareness about changes in population and habitats of common birds.[10]


  1. ^ "Pennsylvania makes strong showing in Great Backyard Bird Count". March 8, 2015. Retrieved 22 March 2015.
  2. ^ "About the GBBC - GBBC". Retrieved 15 February 2018.
  3. ^ Mobley, Jason A. (2009). Birds of the world. New York: Marshall Cavendish. p. 147. ISBN 0761477756. Retrieved 27 March 2015.
  4. ^ "The Great Backyard Bird Count". National Park Services. U.S Department of Interior. Retrieved 27 March 2015.
  5. ^ "Wildlife Institute of India participate in GBBC 2015". Wildlife Institute of India. Wildlife Institute of India. Retrieved 14 June 2015.
  6. ^ "Conservation India takes part in GBBC". Retrieved 21 March 2015.
  7. ^ Sandhu, Veenu (February 6, 2015). "a bird watcher in every balcony". Business Standard. Business Standard. Retrieved 25 April 2015.
  8. ^
  9. ^ Plec, Emily (2013). Perspectives on human-animal communication : internatural communication. New York: Routledge. p. 156. ISBN 9780415640053. Retrieved 27 March 2015.
  10. ^ "Disappearing common birds send environmental wake-up call". Grand Saline Sun (Jun 21 2007). Retrieved 15 April 2015.

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