owl birds feathers birds of prey forests of prey

Eyes that can see in almost total darkness.
Ear tufts to break up their outline and increase camouflage.
Cryptic plumage to aid camouflage.
Soft feathers with a comb-like ‘fringe’ on the flight feathers which acts to displace less air when flying, aiding silent flight.
Round facial discs with special feathers to ‘catch’ sound and direct the sound into the ear openings.
Asymmetrical ear openings to help ears work independently (ie.not in stereo).
Different size ear openings that can hear at different frequencies.
A toe that swivels so talons can be used 2+2 for squeezing prey or 3+1 for gripping a branch.