| 词条 | Black bittern | |||||||
| 释义 |
| name = Black bittern | image = Black bittern (Ixobrychus flavicollis).jpg | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Ixobrychus | species = flavicollis | authority = (Latham, 1790) | synonyms = Dupetor flavicollis }} The black bittern (Ixobrychus flavicollis) is a bittern of Old World origin, breeding in tropical Asia from Bangladesh, Pakistan, India, and Sri Lanka east to China, Indonesia, and Australia. It is mainly resident, but some northern birds migrate short distances. This is a fairly large species at {{convert|58|cm|in|abbr=on}} in length, being by some margin the largest bittern in the genus Ixobrychus. Compared to related species, it has a longish neck and long yellow bill. The adult is uniformly black above, with yellow neck sides. It is whitish below, heavily streaked with brown. The juvenile is like the adult, but dark brown rather than black. Their breeding habitat is reed beds. They nest on platforms of reeds in shrubs, or sometimes in trees. Three to five eggs are laid. They can be difficult to see, given their skulking lifestyle and reed bed habitat, but tend to fly fairly frequently when the all black upperparts makes them unmistakable. Black bitterns feed on insects, fish, and amphibians. Conservation statusAustraliaBlack bitterns are not listed as threatened on the Australian Environment Protection and Biodiversity Conservation Act 1999. State of Victoria, Australia
Gallery==References== 1. ^{{IUCN|id=22697334 |title=Ixobrychus flavicollis |assessor=BirdLife International |assessor-link=BirdLife International |version=2013.2 |year=2012 |accessdate=26 November 2013}} 2. ^Department of Sustainability and Environment, Victoria {{webarchive |url=https://web.archive.org/web/20050718182613/http://www.dse.vic.gov.au/DSE/nrenpa.nsf/LinkView/EADA0F1874AF9CF24A2567C1001020A388BBA5581CF9D859CA256BB300271BDB |date=July 18, 2005 }} 3. ^Department of Sustainability and Environment, Victoria {{webarchive |url=https://web.archive.org/web/20060911130015/http://www.dse.vic.gov.au/DSE/nrenpa.nsf/LinkView/617768308BCB666E4A25684E00192281E7A24BB36FF60A144A256DEA00244294 |date=September 11, 2006 }} 4. ^{{cite book | author = Victorian Department of Sustainability and Environment | title = Advisory List of Threatened Vertebrate Fauna in Victoria - 2007 | publisher = Department of Sustainability and Environment | year = 2007 | location = East Melbourne, Victoria | pages = 15 | url = | isbn = 978-1-74208-039-0 }}
7 : Ixobrychus|Bitterns|Birds of South Asia|Birds of Southeast Asia|Birds of Oceania|Birds described in 1790|Birds of Nepal |
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