Raptors at Risk (red and orange priority). The red priority group was determined for those species that showed the highest proportion of declines during migration counts based on the 10-year migration trend results and Christmas Bird Count winter surveys. The orange priority group was determined for the species which approached the highest proportion of declines during migration counts and Christmas Bird Count winter surveys. The 20-year trend results also are consulted to understand continental patterns. Red-tailed Hawk and Cooper’s Hawk have generally declined on migration counts but have been shown to be increasing during wintering surveys in northern states. Red-tailed Hawks have been shown to be short-stopping or shifting their wintering range northward. Although further research is needed, we suspect both species are changing their migration behavior, thus we are not including them as Raptors at Risk at this time.

Note: Species with trend data from less than five sites continent-wide, e.g. Prairie Falcon, were not categorized due to insufficient trend data relative to the species distribution.