Great Horned Owl ~ Bubo virginianus Introduction. Great Horned Owl. Cassini (Great Horned Owl) Bubo virginianus . Great Horned Owl: Hunts primarily at night, preying on rabbits, woodchucks, mice, rats, squirrels, skunks, ducks, quail, and occasionally geese or turkeys. They are amazingly camouflaged for cottonwood and oak woodlands. These “plumicorns” resemble horns or, to some, catlike ears. Despite their name, Great Horned … The females are larger than the males. Great horned owls are one of the largest owls in California only topped by the Great Grey Owl. The basic body color is overall gray spotted with brown, with white and black markings. Colorado Parks and Wildlife says that Great Horned Owls have been documented in every Colorado State Park. This powerful predator can take down birds and mammals even larger than itself, but it also dines on daintier fare such as tiny scorpions, mice, and frogs. With its long, earlike tufts, intimidating yellow-eyed stare, and deep hooting voice, the Great Horned Owl is the quintessential owl of storybooks. Great Horned Owl: One to five dull white eggs are laid in an abandoned nest made by hawks or crows. Foraging and Feeding. Introduction: The Great Horned Owl is a very large, powerful owl with prominent ear-tufts. The great horned owl is the most common owl of the Americas, easily recognizable because of the feather tufts on its head. It was first seen in the Virginia colonies, so its species name virginianus was created from the Latinised form of this name.. Photo Gallery (17 pictures) Eggs are incubated for 28 to 35 days, mostly by the female. It is found in woodland habitats statewide, including suburbia. Great Horned Owl Bubo virginianus The great horned owl is the largest owl species in North Carolina. The barred owl is also found statewide, but is more typical of swamps, floodplains and moist woodlands. They stand 18-23 inches tall with a 5 foot wingspan. This is the most common species of owl in Colorado, as well as the largest, with wingspans nearly five feet long.