| 词条 | Island imperial pigeon |
| 释义 |
| name = Island imperial pigeon | image = Ducula pistrinaria rhodinolaema.jpg | status = LC | status_system = IUCN3.1 | status_ref = [1] | genus = Ducula | species = pistrinaria | authority = Bonaparte, 1855 | synonyms = }} The island imperial pigeon (Ducula pistrinaria) is a species of bird in the family Columbidae. It is found in the Bismarck Archipelago and the Solomon Islands archipelago, living in primary and secondary forests and mangroves. The International Union for Conservation of Nature (IUCN) has assessed it as a least-concern species. TaxonomyThis species was described by Charles Lucien Bonaparte in 1855.[2] The following subspecies are recognised: Ducula pistrinaria rhodinolaema, D. p. vanwyckii, D. p. postrema and D. p. pistrinaria.[3] DescriptionThe island imperial pigeon is about {{convert|39|-|45|cm|abbr=on}} long and weighs {{convert|470|-|500|g|abbr=on}}.[4] The head and neck are pale grey, and there are white spectacles.[4] The upperparts are glossy. The wing coverts and tertials are grey-green, and the primaries and secondaries are blackish. The back is grey-green. The uppertail is dark blue-green, and the undertail is chestnut. The throat is vinous, the breast is greyish-vinous, and the belly is greyish-fawn. The beak is slaty-blue, having a black tip. The eye is dark red or brownish, and the feet are red. The juvenile bird is duller and buffier. The subspecies have different sizes and glosses.[5] Distribution and habitatThis pigeon is found in the Bismarck Archipelago, the Solomon Islands archipelago and small islands to the north and east of New Guinea.[4] Its habitat is coastal primary forest, old secondary forest, mangroves and some disturbed habitats.[5] BehaviourOne or two birds and small flocks are usually found; large flocks are occasionally seen. The pigeon flies swiftly and directly. It plucks fruits from branches in the canopy, and it flies across the sea to search for food. Its calls include a rising and repeated c-wooooohooo given when the bird is upright, a loud series of descending coos while bobbing up and down, and a high-pitched crrrrrurrr. In display, it flies up at an angle of 70° and then glides. Breeding has been observed from June to September and in March. The nest is built at the end of a branch and made of twigs. One egg is laid.[5] StatusThe IUCN has assessed it as a least-concern species because of its large range and stable population.[1] References1. ^1 {{cite journal|author=BirdLife International|title=Ducula pistrinaria|journal=IUCN Red List of Threatened Species|volume=2016|page=e.T22691694A93321409|publisher=IUCN|date=2016|doi=10.2305/IUCN.UK.2016-3.RLTS.T22691694A93321409.en|url=http://www.iucnredlist.org/details/22691694/0|accessdate=8 September 2017}} {{Taxonbar|from=Q1264480}}{{DEFAULTSORT:pigeon, imperial, island}}2. ^{{cite journal|last1=Bonaparte|first1=Charles Lucien|title=Coup d'oeil sur les Pigeons|journal=Comptes rendus hebdomadaires des séances de l'Académie des sciences|date=1855|volume=40|page=215|url=https://www.biodiversitylibrary.org/page/4616768|language=French}} 3. ^{{cite web|editor1-last=Gill|editor1-first=F.|editor2-last=Donsker|editor2-first=D.|title=Pigeons|url=http://www.worldbirdnames.org/bow/pigeons/|website=IOC World Bird List Version 7.3|accessdate=8 September 2017}} 4. ^1 {{cite book|last1=Dutson|first1=Guy|title=Birds of Melanesia: Bismarcks, Solomons, Vanuatu and New Caledonia|date=2011|publisher=Bloomsbury|isbn=9781408152461|page=318|url=https://books.google.com/books?id=VgLVBAAAQBAJ&pg=PA318}} 5. ^1 2 3 {{cite book|last1=Gibbs|first1=David|last2=Barnes|first2=Eustace|last3=Cox|first3=John|title=Pigeons and Doves: A Guide to the Pigeons and Doves of the World|date=2010|publisher=A&C Black|isbn=9781408135563|pages=546–547|url=https://books.google.com/books?id=r__Tx8QKQfMC&pg=PA546}} 5 : Ducula|Birds of the Bismarck Archipelago|Birds of the Solomon Islands|Birds described in 1855|Taxonomy articles created by Polbot |
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