Palau ground dove
|Palau ground dove|
(Hartlaub & Finsch, 1872)
Gallicolumba canifrons (Hartlaub & Finsch, 1872)
This dove is about 21 cm (8.3 in) 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.
Distribution and habitat
The 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. It lives in dense forest and woodlands, preferring limestone islands to volcanic islands.
This 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.
A. 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. It is an endangered species under the Palau Endangered Species Act. A 2005 survey found two birds on Babeldaob and two birds on Peleliu.
- BirdLife International (2016). "Alopecoenas canifrons". IUCN Red List of Threatened Species. IUCN. 2016: e.T22691071A93302144. doi:10.2305/IUCN.UK.2016-3.RLTS.T22691071A93302144.en. Retrieved 13 April 2017.
- Gill, F.; Donsker, D. (eds.). "Pigeons". IOC World Bird List Version 7.1. Retrieved 13 April 2017.
- Baptista, L. F.; Trail, P. W.; Horblit, H. M.; Christie, D. A.; Kirwan, G. M.; Boesman, P. "Palau Ground-dove (Alopecoenas canifrons)". In del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D. A.; de Juana, E. Handbook of the Birds of the World Alive.
- Gibbs, David; Barnes, Eustace; Cox, John (2010). Pigeons and Doves: A Guide to the Pigeons and Doves of the World. A&C Black. pp. 415–416. ISBN 9781408135563.
- VanderWerf, Eric A. (2007). 2005 Bird Surveys in the Republic of Palau: Final Report (PDF) (Report). p. 41.