We also provide links to a list of all maps, and to an analysis of population trends from the CBC
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Press Release From The National Audubon Society Announcing The 107th Christmas Bird Count |
| Geographic and Temporal Analysis of Winter Bird Populations |
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The Christmas Bird Count provides critical information on wintering
bird population abundance, distribution, and change over time. Here,
we provide maps that allow users to access bird abundance
data from the CBC. Results are presented as large-scale maps
of average, effort-adjusted abundance, allowing users
to access all information available for any location in North America. These maps are integrated
into several projects, including:
We also provide links to a list of all maps, and to an analysis of population trends from the CBC |
 Wintering Distribution Maps |
The Wintering Bird Distribution Maps are based on average effort-adjusted counts from The Christmas Bird Count, 1959 - 1988 |
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Historical CBC Analysis |
This analysis of CBC data was conducted in 1997 based on average effort-adjusted counts from The Christmas Bird Count, 1959 - 1988. Patuxent staff are currently involved in updating this analysis using statistical methods developed at the Patuxent Wildlife Research Center. |
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Recent Christmas Bird Count Publications by Patuxent Authors |