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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 genus Asio was introduced by the French zoologist Mathurin Jacques Brisson in 1760 with the long-eared owl (Asio otus) as the type species. [1] [2] The genus name is from asiō, the Latin name used by Pliny the Younger for a type of horned owl, [3] the feather tufts on the head of these owls give the appearance of "ears" which is a defining characteristic.
The long-eared owl has a somewhat similar plumage to the eagle-owl, but is considerably smaller (an average female eagle-owl may be twice as long and 10 times heavier than an average long-eared owl). [25] Long-eared owls in Eurasia have vertical striping like that of the Eurasian eagle-owl, while long-eared owls in North America show a more ...
The interspecific owl trophic chain was perhaps most conspicuous in a case where a barred owl that was shot in New England was found to have a long-eared owl inside its stomach which in turn had an eastern screech-owl in its own stomach. [9] [42] More unexpectedly, barred owls may even prey on other Strix species.
The specific epithet is the Latin word for a type of eared owl. [8] The eastern screech owl is now one of 22 screech owls placed in the genus Megascops that was introduced in 1848 by the German naturalist Johann Kaup. [9] Five subspecies are typically recognised for the eastern screech owl, but the taxonomy in the species is considered "muddled ...
Williams's jerboa is mainly nocturnal and spends the day in a system of burrows. Emerging at night, it feeds on insects and plant material. [6] The Williams's jerboa is a common food source for the long-eared owl in Turkey. [7]
The long-eared owl is the most regularly taken as prey of any raptorial bird by Eurasian eagle-owls. Other than these two species, a large share of the raptorial prey for eagle-owls is made up of other owls. Given that all European owls are to some extent nocturnal, they may be encountered and killed upon detection by the Eurasian eagle-owl.
Long-eared owl: Asio otus (Linnaeus, 1758) 172 Abyssinian owl: Asio abyssinicus (Guérin-Méneville, 1843) 173 Madagascar owl: Asio madagascariensis (Smith, A, 1834) 174