Dark head, with a thick, dark mustache mark.
Dark brown eyes; its eye rings, cere, and legs are yellow.
Only North American falcon whose wings almost touch
the tip of the tail in perched birds. May hunt by swooping
down on prey from off a high cliff ledge or building,
but prefer to wait far aloft to spot avian prey –
and then "stooping" from a great height, at
high speeds, to hit the prey in the air and tumble it
to the ground. When in a stoop, the Peregrine can reach
a speed of 200 mph and is the bird world's fastest flyer.