Species Assessment: |
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The 10-year migration count trends for the Red-tailed Hawk suggest a mix of stable and declining
counts across North America with 58% of 74 total sites showing stable counts 2009 to 2019.
Decreasing observations were observed for 41% of the sites and only 1% of sites reported an
increase. Regionally, observations are a mix of stable and declining reports with 50% of sites
showing decreasing counts in the East Region and a 33% decreasing in the Central Region. The Gulf
and West Regions have reported mostly stable trends (see pie charts and trend maps below).
Twenty-year count trends also reflect a mix of stable and declining counts. The Central and East
regions represent the majority of decreased counts over this span (Central Region: 2 decrease; East
Region: 6 stable, 18 decrease; Gulf Region: 4 stable, 1 decrease; West Region: 6 stable). Hawk Ridge,
Minnesota and Goshutes Mountains, Nevada, record the highest counts of Red-tailed Hawks on
migration at 6,751 and 4,006 per year in the recent decade. However, widespread declines at
migration sites are noted mostly in the East Region, where Derby Hill, New York, leads the count
totals recording 3,572 Red-tailed Hawks per year. Derby Hill,
New York, has observed declines of 7.32% per year for the
past decade.
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D. Oleyar, D. Ethier, L. Goodrich, D. Brandes, R. Smith, J. Brown, and J. Sodergren. 2021. The Raptor Population Index: 2019 Analyses and Assessments.