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The boreal owl (Aegolius funereus) or Tengmalm's owl is a small owl in the "true owl" family Strigidae.It is known as the boreal owl in North America and as Tengmalm's owl in Europe after Swedish naturalist Peter Gustaf Tengmalm or, more rarely, Richardson's owl after Sir John Richardson.
Certain words in the English language represent animal sounds: the noises and vocalizations of particular animals, especially noises used by animals for communication. The words can be used as verbs or interjections in addition to nouns , and many of them are also specifically onomatopoeic .
The genus Aegolius was introduced in 1829 by the German naturalist Johann Jakob Kaup with the boreal owl (Aegolius funereus) as the type species. [2] [3] The genus name is Latin for a screech owl, the word came from the Ancient Greek aigÅlios meaning "a bird of ill omen". [4] In Greek mythology, Aegolius was originally a man whom Zeus ...
The barred owl is a powerful vocalist, with an array of calls that are considered "spectacular, loud and emphatic". [42] Calls probably carry well over 0.8 km (0.50 mi). [43] Its usual call is a series of eight accented hoots ok-ok-ok-ok ok-ok-buhooh, or the "typical two-phrase hoot" with a downward pitch at the end.
When the sound source is directly in front of the owl, there is no ITD, i.e. the ITD is zero. In sound localization, ITDs are used as cues for location in the azimuth. ITD changes systematically with azimuth. Sounds to the right arrive first at the right ear; sounds to the left arrive first at the left ear.
The northern saw-whet owl (Aegolius acadicus) is a species of small owl in the family Strigidae. The species is native to North America. Saw-whet owls of the genus Aegolius are some of the smallest owl species in North America. They can be found in dense thickets, often at eye level, although they can also be found some 20 ft (6.1 m) up.
Boreal owl, Aegolius funereus LC; Northern saw-whet owl, ... especially their remarkable ability to mimic a wide variety of birds and other sounds heard outdoors. The ...
Boreal owl, Aegolius funereus (accidental) [4] Northern saw-whet ... especially their remarkable ability to mimic a wide variety of birds and other sounds heard ...