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{{automatic taxobox
{{Taxobox
| name = True owl
| name = True owl
| taxon = Strigidae
| taxon = Strigidae
| authority = [[William Elford Leach|Leach]], 1820
| image =Eastern_Screech_Owl.jpg
| fossil_range = Early [[Eocene]] to present
| image_caption = [[Eastern Screech owl]]
| image = Eastern Screetch-Owl.jpg
| authority = [[Nicholas Aylward Vigors|Vigors]], 1825

| image_caption = [[Eastern screech owl]]
| subdivision_ranks = [[Genus|Genera]]
| subdivision =some 25, see text
| synonyms =Striginae <small>''sensu'' Sibley & Ahlquist</small>
}}
}}
[[File:Strix nebulosa plumage.jpg|thumb|right|Cross sectioned [[Great Grey owl]] specimen showing the extent of the body plumage, Zoological Museum, Copenhagen]]
[[File:Strix nebulosa plumage.jpg|thumb|right|Cross sectioned [[Great Grey owl]] specimen showing the extent of the body plumage, Zoological Museum, Copenhagen]]


'''True owls''' (or 'Typical owls') are owls of the [[family (biology)|family]] '''Strigidae'''.
'''True owls''' (typical owls) are owls of the [[family (biology)|family]] '''Strigidae'''.


They are one of the two families of [[owl]]s, with 189 living species in 25 genera. The other family is the [[Tytonidae|barn owl]]s. True owls are found on every continent except [[Antarctica]].
They are one of the two families of [[owl]]s, with 189 living species in 25 genera. The other family is the [[Tytonidae|barn owl]]s. True owls are found on every continent except [[Antarctica]].


The division of owls into these two groups is quite ancient. The relationships of the owls in general are still unresolved.<ref>Sibley, Charles Gald & Monroe, Burt L. Jr. 1990. Distribution and taxonomy of the birds of the world: a study in molecular evolution. Yale University Press, New Haven, CT. ISBN 0-300-04969-2</ref><ref>Johnsgard, Paul A. 2002. North American Owls: biology and natural history, 2nd ed. Smithsonian Institution Press, Washington DC. ISBN 1-56098-939-4</ref>
The division of owls into these two groups is quite ancient. The relationships of the owls in general are still unresolved.<ref>Sibley, Charles Gald & Monroe, Burt L. Jr. 1990. ''Distribution and taxonomy of the birds of the world: a study in molecular evolution''. Yale University Press, New Haven, CT. {{ISBN|0-300-04969-2}}</ref><ref>Johnsgard, Paul A. 2002. ''North American Owls: biology and natural history''. 2nd ed. Smithsonian Institution Press, Washington DC. {{ISBN|1-56098-939-4}}</ref>


==Morphology==
==Morphology==
Typical owls vary greatly in size. The smallest is the [[Elf owl]]. Its weight is a hundred times less than the largest, the [[Eurasian Eagle owl]] and [[Blakiston's Fish owl]]. Most owls have very similar bodies.<ref name = "HBW"> Marks J.S; Cannings R.J. & Mikkola H. 1999. Family Strigidae (Typical owls). ''In'' del Hoyo J; Elliot A. & Sargatal J. (eds) 1999. ''Handbook of the Birds of the World. Volume 5: Barn-Owls to Hummingbirds.'' Lynx Edicions. ISBN 84-87334-25-3</ref> They have large heads, short tails, and round facial circles around the eyes. Most live in trees (with a few exceptions like the [[Burrowing owl]]) and get their food on the wing. The wings are large, broad, rounded and long. Like other [[bird of prey|birds of prey]] many owls have females that are larger than males.<ref>Earhart, Caroline M. and Johnson, Ned K. 1970. Size dimorphism and food habits of North American owls. ''Condor'' '''72''' (3): 251-264</ref>
Typical owls vary greatly in size. The smallest is the [[elf owl]]. Its weight is a hundred times less than the largest, the [[Eurasian eagle owl]] and [[Blakiston's fish owl]]. Most owls have very similar bodies.<ref name = "HBW">Marks J.S; Cannings R.J. & Mikkola H. 1999. Family Strigidae (Typical owls). ''In'' del Hoyo J; Elliot A. & Sargatal J. (eds) 1999. ''Handbook of the Birds of the World. Volume 5: Barn-Owls to Hummingbirds.'' Lynx Edicions. {{ISBN|84-87334-25-3}}</ref> They have large heads, short tails, and round facial circles around the eyes. Most live in trees (with a few exceptions like the [[burrowing owl]]) and get their food on the wing. The wings are large, broad, rounded and long. Like other [[bird of prey|birds of prey]] many owls have females that are larger than males.<ref>Earhart, Caroline M. and Johnson, Ned K. 1970. Size dimorphism and food habits of North American owls. ''Condor'' '''72''' (3): 251-264</ref>


They are [[nocturnal animal|nocturnal]]. Because of this the [[plumage]] is not much different between males and females. The feathers are soft and the base of each is downy. This give them silent flight. Hearing in owls is highly sensitive. The ears are [[Asymmetry|asymmetrical]] which lets the owl localise a sound. Owls have massive eyes relative to their body size.
They are [[nocturnal animal|nocturnal]]. Because of this the [[plumage]] is not much different between males and females. The feathers are soft and the base of each is downy. This give them silent flight. Hearing in owls is highly sensitive. The ears are [[Asymmetry|asymmetrical]] which lets the owl localise a sound. Owls have massive eyes relative to their body size.


==References==
==References==
{{Reflist}}
{{Reflist}}


* Feduccia, J. Alan (1970): Some birds of prey from the Upper Pliocene of Kansas. ''Auk'' '''87'''(4): 795-797. [http://elibrary.unm.edu/sora/Auk/v087n04/p0795-p0797.pdf PDF fulltext]
* Feduccia, J. Alan 1970. Some birds of prey from the Upper Pliocene of Kansas. ''Auk'' '''87'''(4): 795-797. [http://elibrary.unm.edu/sora/Auk/v087n04/p0795-p0797.pdf PDF fulltext] {{Webarchive|url=https://web.archive.org/web/20110606111215/http://elibrary.unm.edu/sora/Auk/v087n04/p0795-p0797.pdf |date=2011-06-06 }}
* Olson, Storrs L. (1985): The fossil record of birds. ''In:'' Farner, D.S.; King, J.R. & Parkes, Kenneth C. (eds.): ''Avian Biology'' '''8''': 79-238. Academic Press, New York.
* Olson, Storrs L. 1985: The fossil record of birds. In Farner D.S.; King J.R. & Parkes, Kenneth C. (eds): ''Avian Biology'' '''8''': 79-238. Academic Press, New York.
* Sánchez Marco, Antonio (2004): Avian zoogeographical patterns during the Quaternary in the Mediterranean region and paleoclimatic interpretation. ''Ardeola'' '''51'''(1): 91-132. [http://www.ardeola.org/files/Ardeola_51(1)_91-132.pdf PDF fulltext]
* Sánchez Marco, Antonio (2004): Avian zoogeographical patterns during the Quaternary in the Mediterranean region and paleoclimatic interpretation. ''Ardeola'' '''51'''(1): 91-132. [http://www.ardeola.org/files/Ardeola_51(1)_91-132.pdf PDF fulltext]


==Other websites==
==Other websites==
{{commons category|Strigidae}}
{{commons category|Strigidae}}
*[http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=177854 ITIS - Strigidae Taxonomy]
*[http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=177854 ITIS - Strigidae Taxonomy] {{Webarchive|url=https://web.archive.org/web/20040820172227/http://www.itis.usda.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=177854 |date=2004-08-20 }}
*[http://ibc.lynxeds.com/family/typical-owls-strigidae Typical owl videos] on the Internet Bird Collection
*[http://ibc.lynxeds.com/family/typical-owls-strigidae Typical owl videos] {{Webarchive|url=https://web.archive.org/web/20120817101739/http://ibc.lynxeds.com/family/typical-owls-strigidae |date=2012-08-17 }} on the Internet Bird Collection
*[http://www.xeno-canto.org/browse.php?query=strigidae Strigidae sounds from the Neotropics] on xeno-canto.org
*[http://www.xeno-canto.org/browse.php?query=strigidae Strigidae sounds from the Neotropics] on xeno-canto.org
*[http://www.owlpages.com/ The Owl Pages] about owls - photos, calls, books, art, mythology and more.
*[http://www.owlpages.com/ The Owl Pages] about owls - photos, calls, books, art, mythology and more.


[[Category:Strigiformes]]
[[Category:Strigiformes]]

[[kbd:КӀукӀумяу лъэпкъыр]]
[[ar:بوم حقيقي]]
[[az:Bayquşlar]]
[[be:Савіныя]]
[[bg:Совови]]
[[br:Strigidae]]
[[ca:Estrígid]]
[[cs:Puštíkovití]]
[[da:De egentlige ugler]]
[[de:Eigentliche Eulen]]
[[et:Kaklased]]
[[myv:Корш]]
[[es:Strigidae]]
[[en:True owl]]
[[eo:Strigedoj]]
[[fr:Strigidae]]
[[fy:Ulefûgels]]
[[gl:Estríxidos]]
[[ko:부엉이]]
[[hr:Sove]]
[[it:Strigidae]]
[[he:ינשופיים]]
[[sw:Bundi (Strigidae)]]
[[lad:Kukuvaya]]
[[lez:ТӀиб]]
[[lv:Pūču dzimta]]
[[lt:Pelėdiniai]]
[[hu:Bagolyfélék]]
[[ml:നത്ത്]]
[[ms:Strigidae]]
[[nl:Uilen (vogelfamilie)]]
[[ja:フクロウ科]]
[[frr:Kadüülen]]
[[no:Egentlige ugler]]
[[nn:Uglefamilien]]
[[pl:Puszczykowate]]
[[pt:Strigidae]]
[[ro:Strigidae]]
[[rue:Сововы]]
[[ru:Совиные]]
[[sah:Мэкчиргэлэр кэргэннэрэ]]
[[se:Skuolffit]]
[[sk:Sovovité]]
[[sl:Prave sove]]
[[fi:Pöllöt]]
[[sv:Egentliga ugglor]]
[[th:วงศ์นกเค้าแมว]]
[[tr:Baykuşgiller]]
[[uk:Совові]]
[[vi:Họ Cú mèo]]
[[zh:鸱鸮科]]

Latest revision as of 07:22, 22 March 2022

True owl
Temporal range: Early Eocene to present
Eastern screech owl
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Strigiformes
Family: Strigidae
Leach, 1820
Genera

some 25, see text

Synonyms

Striginae sensu Sibley & Ahlquist

Cross sectioned Great Grey owl specimen showing the extent of the body plumage, Zoological Museum, Copenhagen

True owls (typical owls) are owls of the family Strigidae.

They are one of the two families of owls, with 189 living species in 25 genera. The other family is the barn owls. True owls are found on every continent except Antarctica.

The division of owls into these two groups is quite ancient. The relationships of the owls in general are still unresolved.[1][2]

Morphology

[change | change source]

Typical owls vary greatly in size. The smallest is the elf owl. Its weight is a hundred times less than the largest, the Eurasian eagle owl and Blakiston's fish owl. Most owls have very similar bodies.[3] They have large heads, short tails, and round facial circles around the eyes. Most live in trees (with a few exceptions like the burrowing owl) and get their food on the wing. The wings are large, broad, rounded and long. Like other birds of prey many owls have females that are larger than males.[4]

They are nocturnal. Because of this the plumage is not much different between males and females. The feathers are soft and the base of each is downy. This give them silent flight. Hearing in owls is highly sensitive. The ears are asymmetrical which lets the owl localise a sound. Owls have massive eyes relative to their body size.

References

[change | change source]
  1. Sibley, Charles Gald & Monroe, Burt L. Jr. 1990. Distribution and taxonomy of the birds of the world: a study in molecular evolution. Yale University Press, New Haven, CT. ISBN 0-300-04969-2
  2. Johnsgard, Paul A. 2002. North American Owls: biology and natural history. 2nd ed. Smithsonian Institution Press, Washington DC. ISBN 1-56098-939-4
  3. Marks J.S; Cannings R.J. & Mikkola H. 1999. Family Strigidae (Typical owls). In del Hoyo J; Elliot A. & Sargatal J. (eds) 1999. Handbook of the Birds of the World. Volume 5: Barn-Owls to Hummingbirds. Lynx Edicions. ISBN 84-87334-25-3
  4. Earhart, Caroline M. and Johnson, Ned K. 1970. Size dimorphism and food habits of North American owls. Condor 72 (3): 251-264
  • Feduccia, J. Alan 1970. Some birds of prey from the Upper Pliocene of Kansas. Auk 87(4): 795-797. PDF fulltext Archived 2011-06-06 at the Wayback Machine
  • Olson, Storrs L. 1985: The fossil record of birds. In Farner D.S.; King J.R. & Parkes, Kenneth C. (eds): Avian Biology 8: 79-238. Academic Press, New York.
  • Sánchez Marco, Antonio (2004): Avian zoogeographical patterns during the Quaternary in the Mediterranean region and paleoclimatic interpretation. Ardeola 51(1): 91-132. PDF fulltext

Other websites

[change | change source]