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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.
Generally speaking, the long-eared owls in Europe are much more strongly disposed to being a specialist species than the tawny owl, relying almost entirely on voles. Although in the broad picture, the long-eared also feeds on other prey such as birds and insects, their food niche breadth is consistently lower than that of the tawny owls.
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.
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 ...
Long-eared owl: Asio otus (Linnaeus, 1758) 172 Abyssinian owl: Asio abyssinicus (Guérin-Méneville, 1843) ... Blakiston's fish owl: Ketupa blakistoni (Seebohm, 1884) 194
Great grey owl. Owls. Common barn owl; Western screech owl; Great horned owl; Mountain pygmy owl; Northern spotted owl; Barred owl; Great grey owl; Long-eared owl; Short-eared owl; Northern saw-whet owl; Nighthawks and swifts. Common nighthawk; Black swift; Vaux's swift; Rufous hummingbird. Hummingbirds. Calliope hummingbird; Rufous hummingbird ...
Blakiston's fish owl (Ketupa blakistoni), the largest living species of owl, is a fish owl, a sub-group of eagle-owls that specialize in hunting in riparian areas. [3] It is native to China, Japan, and the Russian Far East. This species is a part of the family known as typical owls (Strigidae), which contains most species of owl.