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A pellet, in ornithology, is the mass of undigested parts of a bird's food that some bird species occasionally regurgitate. The contents of a bird's pellet depend on its diet, but can include the exoskeletons of insects, indigestible plant matter, bones, fur, feathers, bills, claws, and teeth. In falconry, the pellet is called a casting.
Download as PDF; Printable version; ... Vole bones are often found in the pellets of the short-eared owl, [5] the northern spotted owl, [6] ...
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 ...
The Andaman masked owl (Tyto deroepstorffi) is a barn owl endemic to the southern Andaman Islands archipelago of India, in the Bay of Bengal, Indian Ocean. [2] Regarded by some authors as a subspecies of the common barn owl ( Tyto alba ), it is recognized by others as a species in its own right.
The ear tufts are usually dusky in front and paler tawny on the back. Long-eared owl possess a blackish bill color while its eyes may vary from yellowish-orange to orange-red, tarsi and toes feathered. [4] [8] [36] The long-eared owl is a medium-sized owl, which measures between 31 and 40 cm (12 and 16 in) in total length.
The African barred owlet (Glaucidium capense) is a species of small owl in the family Strigidae found in much of southern, central and eastern Africa. The taxon may be four species rather than a single species.
The Australian boobook (Ninox boobook), is a species of owl native to mainland Australia, southern New Guinea, the island of Timor, and the Sunda Islands.Described by John Latham in 1801, it was generally considered to be the same species as the morepork of New Zealand until 1999.