They are extraordinary nocturnal hunters because of their tremendous eyesight. They can see more than 100 times better at night than humans can. However, owls are unable to move their eyes, but their heads can swivel up to 270 degrees on their necks. Sound is another method they use to hunt, having the largest eardrum of any bird. They also can position feathers to increase the sensitivity of their hearing, like cupping your ears to hear better.
Owls are voracious rodent and insect eaters.
Both hawks and owls do present their caregivers with special needs. The enclosures must provide special facilities for housing and exercise. Their diets are critical to their well being, and must be of natural foods.