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Barn owl information


Barn owl
Temporal range: Quaternary–present
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Barn owl at the British Wildlife Centre, England
Barn owl screeches recorded in Ceredigion, Wales
Conservation status
Barn owl
Least Concern (IUCN 3.1)[1]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Strigiformes
Family: Tytonidae
Genus: Tyto
Species:
T. alba
Binomial name
Tyto alba
(Scopoli, 1769)
Global range in green
Synonyms[2]
  • Strix alba (Scopoli, 1769)
  • Strix pratincola (Bonaparte, 1838)
  • Tyto delicatula (Gould, 1837)

The barn owl (Tyto alba) is the most widely distributed species of owl in the world and one of the most widespread of all species of birds, being found almost everywhere except for polar and desert regions, Asia north of the Himalayas, some islands of Indonesia, and some Pacific Islands. It is also known as the common barn owl, to distinguish it from the other species in its family, Tytonidae, which forms one of the two main lineages of living owls, the other being the typical owls (Strigidae).

There are at least three major lineages of barn owl: the western barn owl of Europe, western Asia, and Africa, the eastern barn owl of southeastern Asia and Australasia, and the American barn owl of the Americas. Some taxonomic authorities classify barn owls differently, recognising up to five separate species, and further research needs to be done to resolve the disparate taxonomies. There is considerable variation of size and colour among the approximately 28 subspecies, but most are between 33 and 39 cm (13 and 15 in) in length, with wingspans ranging from 80 to 95 cm (31 to 37 in). The plumage on the head and back is a mottled shade of grey or brown; that on the underparts varies from white to brown and is sometimes speckled with dark markings. The face is characteristically heart-shaped and is white in most subspecies. This owl does not hoot, but utters an eerie, drawn-out screech.

The barn owl is nocturnal over most of its range, but in Great Britain and some Pacific Islands, it also hunts by day. Barn owls specialise in hunting animals on the ground, and nearly all of their food consists of small mammals, which they locate by sound, their hearing being very acute. The owls usually mate for life unless one of the pair is killed, whereupon a new pair bond may be formed. Breeding takes place at varying times of the year, according to the locality, with a clutch of eggs, averaging about four in number, being laid in a nest in a hollow tree, old building, or fissure in a cliff. The female does all the incubation, and she and the young chicks are reliant on the male for food. When large numbers of small prey are readily available, barn owl populations can expand rapidly, and globally the bird is considered to be of least conservation concern. Some subspecies with restricted ranges are more threatened.

  1. ^ BirdLife International (2019). "Tyto alba". IUCN Red List of Threatened Species. 2019: e.T22688504A155542941. doi:10.2305/IUCN.UK.2019-3.RLTS.T22688504A155542941.en. Retrieved 13 November 2021.
  2. ^ Cite error: The named reference Peters1964 was invoked but never defined (see the help page).

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