| 词条 | Dark batis |
| 释义 |
| name = Dark batis | image = | image_caption = | image2 = | image2_caption = Female at Mufindi, Tanzania | status = LC | status_system = IUCN3.1 | status_ref = [1] | taxon = Batis crypta | authority = Fjeldså, Bowie & Kiure, 2006 }} The dark batis (Batis crypta) is a small passerine bird belonging to the genus Batis in the wattle-eye family, Platysteiridae. It is found in highland forest in south-west Tanzania and northern Malawi. These birds were formerly thought to be forest batises (B. mixta) but in 2006 were described as a new species based on differences in morphology and mitochondrial DNA from those birds in northern Tanzania and Kenya. DescriptionThe dark batis is about {{cvt|10|cm}} in length and weighs {{cvt|10|-|15|g}}. It has a dark bill and legs and red eyes. The male is white below with a broad black breastband. Above it has a dark grey crown, grey back with some black feather-tips, a black face-mask and black wings with a white stripe. The female has a greyish crown, brownish back, dark mask, slight white supercilium and a narrow rufous stripe on the wing. Below it has a rufous chin-spot and breast with whitish tips to some of the feathers.[2] The forest batis has a slightly shorter tail. Males of the two species are very similar but forest batises have a narrower breastband and usually some hint of a white supercilium which is lacking in the male dark batis. The females are more distinctive: female forest batises have a paler breast and chin with more white tips giving a mottled appearance. There is a conspicuous white supercilium and a broad rufous wing-stripe.[2] The dark batis has a variety of whistling and harsh churring calls and its wings make a whirring sound in flight. The male's song is a series of short, low whistles.[2] Distribution and habitatIt is found in the Eastern Arc Mountains of East Africa from the Ukaguru Mountains and Uluguru Mountains of central Tanzania south-westwards as far as the Misuku Hills in northernmost Malawi.[3] It inhabits evergreen forest from 540 to 2,140 metres above sea-level and is most common around 1,500 metres. It forages mainly in the lower and middle levels of trees, feeding on insects such as termites.[4] References1. ^{{IUCN|id=22734421 |title=Batis crypta |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=26 November 2013}} 2. ^1 2 {{cite journal | last1 = Fjeldså | first1 = Jon | last2 = Bowie | first2 = Rauri C. K. | last3 = Kiure |first3 = Jacob | year = 2006 | title = The forest batis, Batis mixta, is two species: description of a new, narrowly distributed Batis species in the Eastern Arc biodiversity hotspot | url = http://www.zmuc.dk/VerWeb/Tanzanian_Vertebrates/Bird/Bird_type/Batis_crypta_95.264/95.264_Batis_crypta.pdf | journal = Journal of Ornithology | volume = 147 | issue = 4| pages = 578–590}} 3. ^{{cite web | url = http://www.hbw.com/species/dark-batis-batis-crypta | title = Dark Batis (Batis crypta) | accessdate = 2016-11-04 | publisher = Lynx Edicions|work = Handbook of Birds of the World Alive}} 4. ^{{cite book | last1 = Harris | first1 = Tony | last2 = Franklin | first2 = Kim | year = 2000 | title = Shrikes and Bush-shrikes | publisher = Christopher Helm | pages = 300–301 | ISBN = 0-7136-3861-3}}
External links
3 : Batis (bird)|Birds of East Africa|Birds described in 2006 |
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