Their field of vision is limited to 110 degrees whereas ours is 180 degrees. Contrary to popular belief owls have excellent vision both in daylight and at night. Their pupils are huge at night, letting in great quantities of light and in daytime shrink down to the size of a pinpoint. Owls can see 35 to 100 times better than humans can in dim light. Owls have a large concentration of light sensitive rods usually at the expense of color defining cones.
Owls are somewhat far-sighted.
They have stiff feathers around their beaks called rictal bristles that function similarly to cat's whiskers to help keep track of prey. Silent Flight Silence on the wing for owls comes from a structural modification of the first primary feather on each wing. This feather is serrated instead of smooth like on most birds. This serration breaks up the air flowing over the wing and thus eliminates the noise created by airflow over a smooth surface. For the most part owls eat their prey whole.