Ferruginous hawks that spend their winters in California have been unexpectedly thriving. Yet, their numbers have been significantly declining in their preferred grassland habitats for over 20 years.

These counts provide a more robust collection of data points for Ferruginous Hawk presence in a core part of their range than would be obtainable by a research team operating under typical project ...

Birders scan the horizon in all directions looking for a rare ferruginous hawk which had been seen at the Monomoy National Wildlife Refuge on Morris Island, Chatham earlier this week. The bird's ...

Size The Ferruginous hawk is North America's largest hawk species. Dennis Holcomb Photography / Getty Images One of the biggest, most obvious distinctions between hawks and falcons is size.

Nest poles in Eastern WA’s Benton, Walla Walla, Columbia counties host growing number of endangered ferruginous hawk chicks and allow biology studies.

Nest poles in Eastern WA’s Benton, Walla Walla, Columbia counties host growing number of endangered ferruginous hawk chicks and allow biology studies.

Significant decline in nests Ferruginous hawks were once plentiful in Washington state, according to reports by biologists in 1926 and 1931.

The bird, a female ferruginous hawk, had been a surprise when it was discovered injured along a roadside last month in Ontario, far from its normal range in the western U.S. and Canada. After a ...

Ask Maine Audubon: Digital photography allows for closer study of rare birds There have been a number of unusual visitors to Maine, including a ferruginous hawk in Auburn last week.

These counts provide a more robust collection of data points for Ferruginous Hawk presence in a core part of their range than would be obtainable by a research team operating under typical project ...

Nest poles in Eastern WA’s Benton, Walla Walla, Columbia counties host growing number of endangered ferruginous hawk chicks and allow biology studies.

Nest poles in Eastern WA’s Benton, Walla Walla, Columbia counties host growing number of endangered ferruginous hawk chicks and allow biology studies.