Known for its 6.5-foot wingspan and its crown-shaped head, the harpy eagle can travel upwards of 50 miles per hour through ...

African raptors that hunt during the day face an extinction crisis, with populations decreasing among dozens of species of birds of prey, researchers said in a study published Thursday.

"Birds of prey need their feathers in absolutely perfect condition ... "They have to be [from birds of] the exact same species, similar weight, same sex — it has to be an exact match.

because the group of birds-of-paradise that aren’t biofluorescent don’t have that ultra-black feather.” There are more than 11,000 known bird species, but only a handful of groups are known ...

The other one, slightly smaller, is also of the genus Avisaurus, but its species name has not been coined. The tarsometatarsus similarities to modern birds of prey "suggest they may have ...