The ferruginous hawk (Buteo regalis) is an endangered species in Washington. The population size of ferruginous hawks in Washington is low. This species is impacted by the loss and fragmentation of shrubsteppe and grasslands from agriculture and residential development and associated declines in distribution and abundance of its primary prey, jackrabbits and ground squirrels. Direct sources of mortality include illegal shooting, electrocution from powerlines, and collision with wind turbines.

The Wildlife Survey and Data Management Database - OCCURPOINT contains information on documented point observations for state and federal listed species including those designated as endangered, threatened, sensitive, candidate, and monitor. Additionally, data for other species considered a priority by Washington Department of Fish & Wildlife are also included. This database represents observations from 1881 to the present. Wildlife Survey and Data Management data are collected by a variety of means. Data are collected in the field by Washington Department of Fish and Wildlife biologists, biologists from other agencies or research institutions, volunteers, private organizations, and the general public. Data consist of standard survey data, museum records, scientific collection permit records, and incidental observations. Data are also extracted from other databases, reports and published documents. Less formal means of data submittal include e-mail and phone conversations. Scope of the database is statewide and encompasses over 230 species. The database is continually updated. High priority species are surveyed either every year or every five years. Lower priority species are surveyed as field logistics allow or on a less rigorous schedule. Observations contained in the Wildlife Survey and Data Management Database range in time from 1881 to present. Only the most current (1978 and later) and accurately known data will be supplied. All other data will only be provided in response to special written requests. Using these older data requires consultation with Washington Department of Fish and Wildlife biologists. PLEASE NOTE: This database contains information on species locations with direct regulatory implications. The locations of species may change over time. Washington Department of Fish & Wildlife updates information as additional data become available. Washington Department of Fish & Wildlife does not recommend using maps or digital data more than six months old; please obtain updates rather than use outdated information.

Occurrence data was buffered by 36 square miles by Conservation Biology Institute for data privacy.