Spur-winged Goose

Spur-winged Goose
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
Subfamily: Plectropterinae
Genus: Plectropterus
Stephens, 1824
Species: P. gambensis
Binomial name
Plectropterus gambensis
(Linnaeus, 1766)
Subspecies

P. g. gambensis(Linnaeus, 1766)
P. g. niger (Sclater, 1877)

The Spur-winged Goose (Plectropterus gambensis) is a large bird in the family Anatidae, related to the geese and the shelducks, but distinct from both of these in a number of anatomical features, and therefore treated in its own subfamily, the Plectropterinae. It occurs in wetlands throughout sub-Saharan Africa.

Adults are 75–115 cm (30–45 in) long and weigh on average 4–6.8 kg (8.8–15 lb), rarely up to 10 kg (22 lb), with males much larger than the females.[2][3][4] The wingspan can range from 150 to 200 cm (59 to 79 in).[5] They are the largest African waterfowl and are, on average, the world's largest "goose". They are mainly black, with a white face and large white wing patches. The long legs are flesh-coloured. The nominate race P. g. gambensis has extensive white on the belly and flanks, but the smaller-bodied subspecies P. g. niger, which occurs south of the Zambezi River, has only a small white belly patch.[5][6]

The male differs from the female, not only in size, but also in having a larger red facial patch extending back from the red bill, and a knob at the base of the upper mandible.[6] This is a quiet species, but may give a thin whistle in flight.

The large nest is usually concealed in vegetation near water, but tree holes, other cavities, and old Hamerkop nests may be used. The spur on the bend of the wing may be used in disputes. This abundant and gregarious species feeds by grazing, but spends the middle part of the day resting by water.[6]

The Spur-winged Goose is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.

References

  1. ^ BirdLife International (2004). Plectropterus gambensis. 2006. IUCN Red List of Threatened Species. IUCN 2006. www.iucnredlist.org. Retrieved on 12 May 2006.
  2. ^ "Spur-winged Goose - Plectropterus gambensis : WAZA : World Association of Zoos and Aquariums". WAZA. http://www.waza.org/en/zoo/visit-the-zoo/ducks-geese-pelikanes-and-relatives/plectropterus-gambensis. Retrieved 2011-10-17. 
  3. ^ Garst, Warren and Genevieve (Genny) (2010-02-09). "Spur-winged goose sitting in water". Garst Wildlife Photographic Collection. Colorado State University. http://digital.library.colostate.edu/cgi-bin/pview.exe?CISOROOT=/garst&CISOPTR=380&CISORESTMP=/garst/html/garst_template1.html&CISOVIEWTMP=/garst/html/garst_template2.html&CISOROWS=2&CISOCOLS=4. Retrieved 2011-10-17. 
  4. ^ "Plectropterus gambensis- Spur-winged goose (Species)". Wildpro. http://wildpro.twycrosszoo.org/S/0avanserif/anatidae/1acravan_plectropterus/plectropterus_gambensis/plectropterus_gambensis.htm. Retrieved 2011-10-18. 
  5. ^ a b Ogilvie & Young, Wildfowl of the World. New Holland Publishers (2004), ISBN 978-1843303282
  6. ^ a b c Madge, Steve; Burn, Hilary (1988). Waterfowl: an Identification Guide to the Ducks, Geese, and Swans of the World. Boston: Houghton Mifflin. pp. 160–161. ISBN 0-395-46727-6. 

External links