Plectropterus gambensis
Silhouette: Sheatherius · PhyloPic
In 3 days ~30% in a week ~50%
The spur-winged goose (Plectropterus gambensis) is a large, Sub-Saharan African waterbird in the family Anatidae, which includes geese and shelducks. However, P. gambensis developed unique environmental adaptations, which resulted in the evolution of several anatomical features that are not shared with other anatids; thus, the species has been classified one step further into its own subfamily, the Plectropterinae.
Adults are 75–115 cm (30–45 in) long, and weigh an average of 4–6.8 kg (8.8–15.0 lb) (rarely up to 10 kg (22 lb)), with ganders (males) being noticeably larger than the geese. 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 individuals that were 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 South African-based study found 58 males weighing an average of 5.52 kg (12.2 lb) and measuring 98.1 cm (38.6 in) in total length; meanwhile, 34 females averaged 3.35 kg (7.4 lb) in weight and 84.2 cm (33.1 in) in total length. Among standard measurements... Wikipedia →
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Disney's Animal Kingdom | 🇺🇸 United States | |
| 2 | San Diego Zoo | 🇺🇸 United States | |
| 3 | Cleveland Metroparks Zoo | 🇺🇸 United States | |
| 4 | Johannesburg Zoo | 🇿🇦 South Africa | |
| 5 | Dallas Zoo | 🇺🇸 United States | |
| 6 | Wildlife World Zoo | 🇺🇸 United States | |
| 7 | São Paulo Zoo | 🇧🇷 Brazil | |
| 8 | Catoctin Wildlife Preserve and Zoo | 🇺🇸 United States | |
| 9 | Singapore Zoo | 🇸🇬 Singapore | |
| 10 | Zoologischer Garten Magdeburg | 🇩🇪 Germany | |
| 11 | El Paso Zoo | 🇺🇸 United States | |
| 12 | Giraffe House | 🇿🇦 South Africa | |
| 13 | World of Birds Wildlife Sanctuary and Monkey Park | 🇿🇦 South Africa |
With luck
About 10% of wildlife watchers report a Spur-winged Goose sighting in Cape Town on a given day, based on 346 verified sightings from GBIF citizen-science data. It is the 52nd most-seen of the 196 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
December to February
In those months about 20% of wildlife watchers report a Spur-winged Goose in Cape Town on a given day, against under 5% in April and November, the lowest months. Those are among Cape Town's driest months, with about 20 mm of rain a month against 140 mm in June.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Spur-winged Goose sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 9
Of the 9 cities where we can rate Spur-winged Goose sightings, Cape Town ranks 3rd at about 10%. The best odds are in Kigali (Rwanda, about 40%) and Durban (South Africa, about 10%).
Same family: Anatidae
The closest relatives of the Spur-winged Goose that you can see in Cape Town (family Anatidae, Ducks, Geese, and Swans) are Egyptian Goose (about 60%), Yellow-billed Duck (about 40%) and Cape Shoveler (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spur-winged Goose is recorded against all the birds logged in Cape Town (346 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
