Ferruginous Hawk
(Buteo regalis)

Ferruginous Hawk Image by Jesse Watson

The 10-year migration count trends for Ferruginous Hawks suggest stable populations across its range as the autumn count site in Goshutes, Nevada reported statistically significant stable counts during this span. Twenty-year count trends also reflect a stable population (West Region: 1 stable).

Ferruginous Hawk, North America

2009-2019 (n=1)

Ferruginous Hawk, West

2009-2019 (n=1)

Winter survey data from the Christmas Bird Count (CBC) show stable 10-year trends range-wide with the annual percent change in population reported to be an increase of 1%. The Ferruginous Hawk is a species of Least Concern, designated by the IUCN red list. It has been locally designated with varying sensitivity throughout its range, which is concentrated in the Western United States, Northern Mexico, and Southwestern Canada. Ferruginous Hawks were designated nationally threatened in Canada in 2010. Since 2016, the species has been listed as a Tier II or I species of greatest concern in 12 states. It is ranked by NatureServe as secure, uncommon, but not rare. Ferruginous Hawks are at high risk of population declines due to wind energy. The species has also been shown to be sensitive to urbanization, collisions with vehicles, rodenticides, and lead poisoning.

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