Tiger Owl Skull Replica measures 2.5 inches. Great Horned Owl Negative Footprint & skull are both museum quality polyurethane cast. Made in USA.

The Tiger Owl or Great horned owl (Bubo virginianus), also known as the hoot owl, is a large owl native to the Americas.

The Great horned owl is an extremely adaptable bird with a vast range and is the most widely distributed true owl in the Americas.

Its primary diet is rabbits and hares, rats and mice, and voles, although it freely hunts any animal it can overtake, including rodents and other small mammals, larger mid-sized mammals, birds, reptiles, amphibians, and invertebrates.

The Tiger or Great horned owl is the heaviest extant owl in Central and South America and is the second-heaviest owl in North America, after the closely related but very different-looking snowy owl.

It is heavily built, with a barrel-shaped body, a large head, and broad wings.

Its size can vary considerably across its range, with populations in interior Alaska and Ontario being largest and populations in California and Texas being smallest.

The hard, inflexible bill of the great horned owl is 1.3–2.0 in long, although the culmen, the exposed bill portion as measured along the top of the beak, is only 0.83 to 1.30 in.

The outer ear openings, which are concealed by feathers on the sides of the head, are relatively being 0.91 in. in vertical axis, with the left ear slightly larger than the right.

Like most nocturnal species, the Tiger owl or Great horned owl has asymmetrical ear holes that allow for the triangulation of sounds when hunting in the dark.

The different-height holes, while still close together, are differentiated enough that the owl is able to use the timing and direction of the sound waves hitting each hole to precisely locate prey even if the prey is located under cover such as snow.

The disc-like shape of their faces also helps to direct the sounds they hear toward their ears.

While the true nature or purpose of the ear tufts that are present on the Tiger Owl or Great horned owl is unknown, researchers agree that the tufts do not play any role in the hearing ability of the owl. It is estimated that their hearing is up to ten times that of a human being.

The Tiger owl or Great horned owl’s eyes, just slightly smaller than the eyes of a human being, are large even for an owl and rank proportionately among the largest eyes of all terrestrial vertebrates.

Great horned owls have cylindrical eyes which creates more distance from the lens of the eye to the retina, which allows it to act more like a telephoto lens for farther distance sight compared to that possible from round eyes.

They are visually highly adapted for nocturnal hunting and provide a wide, almost completely binocular field of view, a large corneal surface and a predominantly rod retina.

The Great horned owl’s eye contains both rods and cones like most species that see in color, but the vision of a Great horned owl closely resembles that of many other nocturnal species.

The peak wavelengths that are observed by the cones is 555 nm and the research suggests that the Great horned owl has relatively weak color vision, especially compared to other bird species.

Despite the poorer sense of color vision, the owl manages to have excellent night vision. Instead of turning its eyes, an owl must turn its whole head, and the Tiger owl or Great horned owl can rotate its neck 270°.

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