Ferruginous Hawks (Buteo regalis) that spend their winters in California seem to be going up in number, yet their preferred grassland habitat has been declining for over twenty years. Most other ...

They also surveyed four undeveloped sites in the area for reference on the composition of raptor communities at sites unaffected by wind power development. The surveys focused on a variety of raptor ...

Helicopter shot of a Ferruginous Hawk (Buteo regalis) nestling in a juniper within one of the references areas of the study. Raptors are more readily affected by wind energy than other birds in part ...