Methodology
By: North American Bird Conservation Initiative, A. Rodewald, Mike Brasher, John Alexander, Elisabeth M. Ammon, Tracy E. Borneman, Dustin Brewer, Stephen Brown, Jennie N. Duberstein, Beth Flint, Adam Hannuksela, Kathleen Holland, Jeffrey A. Hostetler, Edwin Juarez, Robin Kaler, Chris Latimer, Elva Manquera, Kate Martin, Chris McCreedy, Nicole Michel, Corina Newsome, Andrew Olsen, Marc Romano, Kenneth V. Rosenberg, B. Ryder, Rebekah J. Rylander, John R. Sauer, Adam Smith, Dena Spatz, Caleb Spiegel, Tice Supplee, Roberta Swift, Eric VanderWerf, Josh Vest, and Olivia Wang
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Abstract
Following the approach developed by Gregory and van Strien (2010), State of the
Birds reports focus on composite summaries of population change for collections of
species that share common primary habitat or taxonomic affinity. In this report, we
provide composite indexes for habitat-obligate species as defined in earlier reports
(Grassland, Aridland, Eastern Forest and Western Forest), for several taxonomic-based
groups (Shorebirds, Waterbirds, Geese and Swans, Sea Ducks, and Dabbling/Diving
Duck species), and for species on our Tipping Point list with adequate data. Lists of
species included in each habitat-obligate group are presented as supplemental material
at StateoftheBirds.org.
| Publication type | Report |
|---|---|
| Publication Subtype | Organization Series |
| Title | Methodology |
| Year Published | 2025 |
| Language | English |
| Publisher | North American Bird Conservation Initiative |
| Contributing office(s) | Eastern Ecological Science Center |
| Description | HTML Document |
| Larger Work Type | Report |
| Larger Work Subtype | Organization Series |
| Larger Work Title | State of the birds report, United States of America 2025 |