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Pellets from a long-eared owl. The alimentary canal of a bird. Long-eared owl pellets and rodent bones obtained from dissected pellets (1 bar = 1 cm). A pellet, in ornithology, is the mass of undigested parts of a bird's food that some bird species occasionally regurgitate.
In some cases, pellets of Bubo owls can range up to 150 mm (5.9 in) in length. [3] [9] Eagle-owl pellets average slightly larger (about 10%) than those of great grey owls (Strix nebulosa). [10] As is the case with all owls, pellets are indisputably the best method to examine the main diversity of prey consumed by an owl.
The pellets are typically grey coloured and are found in groups under trees used for roosting or nesting. At least some tawny owl pellets can measure up to 84 mm (3.3 in) long and can include large objects such as an intact 10 cm (3.9 in) bill of a snipe. [7] [1] [29] [32] Undigested material coughed up often reveals different prey than pellets ...
Scientists studying the diets of owls are helped by their habit of regurgitating the indigestible parts of their prey (such as bones, scales, and fur) in the form of pellets. These "owl pellets" are plentiful and easy to interpret, and are often sold by companies to schools for dissection by students as a lesson in biology and ecology. [37]
Many predators eat voles, including martens, owls, hawks, falcons, coyotes, bobcats, [3] foxes, [4] raccoons, squirrels, snakes, weasels, domestic cats and lynxes. Vole bones are often found in the pellets of the short-eared owl, [5] the northern spotted owl, [6] the saw-whet owl, [7] the barn owl, the great gray owl, [8] and the northern pygmy ...
Cases of owls of any variety scavenging on carrion are generally rare, but at least three instances of carrion-feeding by barred owls have been observed, more recently eating deer and squirrel roadkills on a remote camera in North Carolina. [129] [130] The pellet of the barred owl averages about 3.5 cm (1.4 in) in diameter and 7.2 cm (2.8 in ...
Often long-eared owls will discharge a fairly large amount of pellets and drop them below regular day roosts. Unlike most other owls, the species has no territorial hunting ground. [4] [36] In Switzerland, 14 long-eared owls examined using radiotelemetry were found to have an average home range of 980 ha (3.8 sq mi).
Pellet (ornithology), regurgitated by birds; Pellets (petrology), a carbonate sedimentary structure in limestone; Pellet (steel industry), a processed form of iron ore; Pellet fuel, mostly as wood pellets used as biofuel; Pellet (software), an OWL semantic reasoner; Pellet stove, to burn compressed wood or biomass pellets