North American Breeding Bird Survey
Species Group Summaries for Bird Conservation Regions
This analysis will produce a summary of trends. The summary includes:
- Number of species,
- Proportion of species with positive trend estimates,
- Proportion of species with significant (+ and -) trend estimates, and
- List of species and their trend estimates.
- Precision weighted mean trend (called a prior mean),
- 95% Confidence interval on the prior mean, and
- Rankings of species based on an precision-weighted reordering of the estimates.
These results are based on the Route-regression, estimating equations method.
Please select the data and time period of interest:
1966-2019 core areas
1993-2019 expanded areas
Please enter the Bird Conservation Region of interest:
Please select the guild of interest:
|Grassland Breeding||Open-cup Nesting||Short Distance Migrant|
|Wetland Breeding||Ground or Low nesting||Neotropical Migrant|
|Successional or Scrub Breeding||Mid-story or Canopy Nesting||Permanent Resident|
|Woodland Breeding||Cavity Nesting|
|Urban Breeding||All Species|
ver 2022.0, 09 June 2022, Authors: J.R. Sauer and J.E. Hines.
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