Wildlife pathologist using digital calipers to measure a juvenile bald eagle's talons to determine sex, part of the beak-to-talon ratio used in determining sex | Cornell Wildlife Health Lab

Wildlife pathologist using digital calipers to measure a juvenile bald eagle's talons

Wildlife pathologist using digital calipers to measure a juvenile bald eagle's talons to determine sex, part of the beak-to-talon ratio used in determining sex