Christmas Bird Count–Historical Data
The Christmas Bird Count is thought to be the longest running citizen survey, currently in its 112th year. Each year, between December 14th and January 5th, bird watchers in the U.S. and Canada count birds in their area, recording numbers and species. The Audubon Society takes this data and manages it. This website allows for users to access that data, organizing it by region or species.
Audubon Society’s description of the data set:
“Volunteers have been counting birds on the CBC for over 110 years, and their contributions represent a tremendously valuable resource for learning more about bird behavior and bird conservation. These output tools are designed to give you access to the data collected by the tens of thousands of CBC volunteers…You can construct graphs of species trends over time, or see the raw count data. [You can] see what’s happened on your count over time [or] look up your favorite species…”
Citations:
Audubon Society, Audubon Society, 2012 United States (National)

