Spur-winged goose
| Spur-winged goose | |
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| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Anseriformes |
| Family: | Anatidae |
| Subfamily: | Plectropterinae |
| Genus: |
Plectropterus Stephens, 1824 |
| Species: | P. gambensis |
| Binomial name | |
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Plectropterus gambensis (Linnaeus, 1766) |
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| Subspecies | |
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P. g. gambensis(Linnaeus, 1766) |
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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 (8.8–15.0 lb), rarely up to 10 kg (22 lb), with males noticeably larger than the females. The wingspan can range from 150 to 200 cm (59 to 79 in). One source claims the average weight of males is around 6 kg (13 lb) and the weight of females is around 4.7 kg (10 lb). However, 11 geese of this species banded in South Africa were found to average only 3.87 kg (8.5 lb), with a range of 2.4 to 5.4 kg (5.3 to 11.9 lb). Another study in South Africa found that 58 males weighed an average of 5.52 kg (12.2 lb) and measured 98.1 cm (38.6 in) in total length; while 34 females averaged 3.35 kg (7.4 lb) in weight and 84.2 cm (33.1 in) in total length. Among standard measurements, the wing chord is 42.5 to 55 cm (16.7 to 21.7 in), the bill is 5.7 to 6.4 cm (2.2 to 2.5 in) and the tarsus is 5.7 to 12 cm (2.2 to 4.7 in). They are the largest African waterfowl and are, on average, the world's largest wild "goose", although in average weight, their size is at least rivaled by the Cape Barren goose. Spur-winged geese appear to be more closely allied to shelducks than "true geese" such as those from the Branta and Anser genera. 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. From a distance, P. g. niger can appear to be all black.
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Wikipedia