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Back to Top The amount of food required for a Barn Owl depends on the size of the owl and the time of the year. Though the owls appear to be specialized in hunting small mammals, this actually may only reflect the fact that these prey items are what the owls are most likely to encounter in their nocturnal habitat. Back to Top Birds have what is known as a nictitating membrane or “third eyelid.” This is a clear eyelid, closest to the eyeball. Pellet regurgitation appears to be stimulated by the sight of a potential meal. Back to Top Like all birds, owls do not have teeth.
Incubation begins after the first egg is laid and the female only rarely leaves the nest during this time, and only for brief periods.
Back to Top Home ranges of the Barn Owl are highly variable and vary in relation to prey density and habitat characteristics. S., home ranges of radio-tagged individuals are about 740–1800 acres, roughly 1–2.5 square miles.
When the chick is still in the egg, how does it get air to breathe? Why hasn’t one of the eggs hatched even though the others have hatched? In many cases the male will bring excess prey that is stored in the nest for later consumption.
Most of the prey they eat are active at night, so squirrels and chipmunks are relatively safe from Barn Owls.
Back to Top Barn Owls eat mostly small mammals, particularly rats, mice, voles, lemmings, and other rodents; also shrews, bats, and rabbits.
Mammals excrete waste as urea dissolved in urine; birds excrete it as uric acid, which has a low solubility in water, and so it comes out as a white paste.