| 词条 | Chestnut owlet |
| 释义 |
| image = Die_Vögel_Afrikas_(6425131981).jpg | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Glaucidium | species = castaneum | authority = Neumann, 1893 | synonyms = }} The chestnut owlet (Glaucidium castaneum) is a species of owl in the family Strigidae. It is found in west and central Africa in two allopatric populations which may be species in themselves. DescriptionThe chestnut owlet is a small owlet which is rather similar to the African barred owlet, which is larger. The adult chestnut owlet has a brown facial disk which is marked with dark bars and flecks and whitish eyebrows. The upperparts are chestnut with a white spotted crown and a white shoulder line formed by the outer wens of the scapulars. The paler underparts are marked with dense barring on the breast, with spots on the rest of the underparts. The eyes are yellow, the cere and bill are greenish yellow, the legs are feathered and the toes are dirty yellow but rather bristly. They are {{convert|20|-|21.5|cm|in|abbr=on}} in length.[2] Distribution and subspeciesThere are two currently recognised subspecies, which may be full species considering their allopatric distribution. The subspecies an their distributions are:[3]
This species is closely related to the African barred owlet and the subspecies G.c. etchecopari is sometimes regarded as a subspecies of that species.[2] Habits and habitatThe chestnut owlet occurs in humid lowland rainforest and montane forest, at {{convert|1000|–|1700|m|ft|abbr=on}} in altitude.[4] The biology of the chestnut owlet is little known but like the related African barred owlet it is partly diurnal. Like other owls it will be mobbed by small passerines if discovered at its roost. Its prey is small vertebrates and arthropods, which are either caught from a perch or gleaned from the foliage.[2] References1. ^{{Cite journal | author = BirdLife International | title = Glaucidium castaneum | journal = The IUCN Red List of Threatened Species | volume = 2016 | page = e.T22689295A93226067 | publisher = IUCN | date = 2016 | url = http://www.iucnredlist.org/details/22689295/0 | doi = 10.2305/IUCN.UK.2016-3.RLTS.T22689295A93226067.en | access-date = 23 December 2017}} {{Taxonbar|from=Q1262685}}{{DEFAULTSORT:owlet, chestnut}}2. ^1 2 {{cite book | last1 = König | first1 = Claus | last2 = Weick | first2 = Friedhelm | last3 = Becking | first3 = Jan-Hendrick | year = 1999 | title = Owls A Guide to the Owls of the World | pages = 379–380 | publisher = Pica Press | ISBN = 1-873403-74-7}} 3. ^{{cite web| url = http://avibase.bsc-eoc.org/species.jsp?avibaseid=8A0EA1D784C148DD | title = Chestnut Owlet Glaucidium castaneum Reichenow, 1893 | accessdate = 29 October 2016 | publisher = Denis Lepage|work = Avibase}} 4. ^{{cite web | url = http://www.hbw.com/species/chestnut-owlet-glaucidium-castaneum | title = Chestnut Owlet (Glaucidium castaneum) | accessdate = 29 October 2016 | publisher = Lynx Edicions|work = Handbook of the Birds of the World Alive}} 5 : Glaucidium|Birds of Central Africa|Birds of Sub-Saharan Africa|Birds described in 1893|Taxonomy articles created by Polbot |
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