Merlin - small, dark streaked falcon, very fast. Peregrine Falcon - same size and shape as Prairie Falcon but darker. Adults have banded tails. Eagles Golden Eagle - large, almost flat wing profile, mostly dark with juveniles having white patches under wing or under tail. Bald Eagle - large with perfectly flat wing profile.
Adults have white head and tail.
Juveniles are mottled black and white. At least 17 species of raptors have been seen atop the Bridger Mountains. One of the largest raptors with a wingspan of 7 feet, the Golden Eagle is a masterful hunter and powerful flyer. Daily counts of over 200 Golden Eagles are possible during early October. Each autumn, an observation team atop the Bridgers counts raptors as part of an international effort to study these magnificent birds.