| 词条 | Palau ground dove |
| 释义 |
| name = Palau ground dove | image = | status = EN | status_system = IUCN3.1 | status_ref = [1] | regnum = Animalia | phylum = Chordata | classis = Aves | ordo = Columbiformes | familia = Columbidae | genus = Alopecoenas | species = A. canifrons | binomial = Alopecoenas canifrons | binomial_authority = (Hartlaub & Finsch, 1872) | synonyms = Gallicolumba canifrons (Hartlaub & Finsch, 1872)}} The Palau ground dove (Alopecoenas canifrons) is a species of bird in the family Columbidae.[2] It is endemic to Palau, living in forests. The IUCN has assessed it as a near-threatened species. TaxonomyHartlaub and Finsch described this species as Phlegoenas canifrons from Palau in 1872. The species is monotypic.[3] Formerly placed in the genus Gallicolumba, it is now in Alopecoenas.[1] DescriptionThis dove is about {{convert|21|cm|abbr=on}} long. The forehead and lores are ashy grey, and the crown is dark slaty. The nape and upper mantle are chestnut. The lower mantle is olive and has bronze reflections. The flight feathers are dark brown and rufous, and there is a purple patch on the wing coverts. The throat is pearly grey, and the breast is ashy grey. The abdomen is blackish brown. The upper tail has green and blackish feathers, and the under tail is blackish. The eyes are dark brown, the beak is blackish, and the legs are red. The juvenile bird has a duller forehead and throat, and it does not have the purple patch on the wing coverts.[4] Distribution and habitatThe Palau ground dove is endemic to Palau. It is one of two species of terrestrial pigeons in Palau, the other being the larger Nicobar pigeon.[4] It lives in dense forest and woodlands, preferring limestone islands to volcanic islands.[4] BehaviourThis is a solitary species, foraging for seeds and fruits in leaf litter on the ground. It calls from the same place in the mornings and evenings, cooing monotonously for up to two minutes. It also gives a moaning call. Its breeding habits are unknown.[4] StatusA. canifrons is mostly rare, but it is common on small islands called the Rock Islands. The number of mature individuals is estimated at 600–1700. It is not threatened on some small islands, so the population trend is probably stable. Invasive species such as rats and the brown tree snake may threaten the species. The International Union for Conservation of Nature has assessed its conservation status as near threatened because the species is rare and has a small population.[1] It is an endangered species under the Palau Endangered Species Act. A 2005 survey found two birds on Babeldaob and two birds on Peleliu.[5]References1. ^1 2 BirdLife International. 2018. Alopecoenas canifrons. The IUCN Red List of Threatened Species 2018: e.T22691071A131327063. https://dx.doi.org/10.2305/IUCN.UK.2018-2.RLTS.T22691071A131327063.en. Downloaded on 19 December 2018. {{Taxonbar|from=Q27074720}}{{DEFAULTSORT:dove, ground, Palau}}2. ^{{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 7.1|accessdate=13 April 2017}} 3. ^{{cite encyclopedia|last1=Baptista|first1=L. F.|last2=Trail|first2=P. W.|last3=Horblit|first3=H. M.|last4=Christie|first4=D. A.|last5=Kirwan|first5=G. M.|last6=Boesman|first6=P.|editor1-last=del Hoyo|editor1-first=J.|editor2-last=Elliott|editor2-first=A.|editor3-last=Sargatal|editor3-first=J.|editor4-last=Christie|editor4-first=D. A.|editor5-last=de Juana|editor5-first=E.|title=Palau Ground-dove (Alopecoenas canifrons)|encyclopedia=Handbook of the Birds of the World Alive|url=http://www.hbw.com/species/palau-ground-dove-alopecoenas-canifrons}} 4. ^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=415–416|url=https://books.google.com/books?id=r__Tx8QKQfMC&pg=PA415}} 5. ^{{cite report|last=VanderWerf|first=Eric A.|title=2005 Bird Surveys in the Republic of Palau: Final Report|page=41|date=2007|url=http://www.palauconservation.org/cms/images/stories/resources/pdfs/Palau_2005_bird_survey_report.pdf|deadurl=yes|archiveurl=https://web.archive.org/web/20160322153922/http://www.palauconservation.org/cms/images/stories/resources/pdfs/Palau_2005_bird_survey_report.pdf|archivedate=2016-03-22|df=}} 7 : Alopecoenas|Birds of Palau|Endemic fauna of Palau|Near threatened animals|Near threatened biota of Oceania|Birds described in 1872|Taxonomy articles created by Polbot |
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