United States. 1  UL 72 (Tests for fire resistance of record protection equipment) 2  UL 140 (Relocking devices for safes and vaults) 3  UL 294 (Access control system units) 4  UL 365 (Police station alarm units) 5  UL 437 (Key locks) 6  UL 608 (Burglar-resistant vault doors) 7  UL 609 (Local burglar alarm units and systems) 8  UL 636 (Holdup alarm units)
Owls are birds of prey. Owls feed on a wide variety of prey including mammals, other birds, insects, and reptiles. There are even some species of owls that live in Africa and Asia that feed on birds.Owls cannot chew their prey since, like all birds, they do not have teeth.ost owls are nocturnal. Most owls are active at night. A few species (such as the pygmy owls) are active in the early morning or at dusk while some (such as the burrowing owl and the short-eared owl) are active during the day.
This robust owl species is commonly found across North America, thriving in a wide-range of open habitats (including the cold Arctic tundra). The great horned owl is a fierce predator that hunts a great variety of prey, including skunks, rabbits, reptiles, osprey and crows.he Barn Owl. One of the most common owls found in North America is the barn owl. The adult species goes through two feather color transformations-- white and orange--- that often feature unique spotted hues. The medium-sized barn owl has small eyes, a smooth head, heart-shaped face and long legs.