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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]
Scientists study the owl pellets to keep track of vulnerable or endangered species in the area since sooty owls are known to prey on these species. Owl pellets are compact clusters of partially digested food pieces like fur, bone and feathers that the owl regurgitates from its gizzard. [15] Owls from the family Tytonidae are known to eat their ...
The New Providence site contained only two partial skeletons, but also copious amounts of owl pellets. These show that T. pollens had a diet which was largely based on the large rodent Geocapromys ingrahami , which at present only survives on a single small arid island, but which appears to have once been the only land mammal of the Bahamas and ...
Pacific pygmy owl with eyespots behind head. Adults are 15–17 cm (5.9–6.7 in) in overall length and are gray, brownish-gray or rufous in colour. This owl has a round white-spotted head, weakly defined facial disc, and dark upper breast, wings and tail, the latter quite long compared to other owls.
The northern white-faced owl (Ptilopsis leucotis) is a species of owl in the family Strigidae. The southern white-faced owl (P. granti) was formerly included in this species and the two were known as the white-faced scops-owl. It is found in a band across Africa between the Sahara and the Equator. It occurs in Benin, Burkina Faso, Cameroon ...