Cape Teal vs Mute Swan
Anas capensis เปรียบเทียบกับ Cygnus olor
Side-by-Side Comparison
| คุณสมบัติ | Cape Teal | Mute Swan |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Anas capensis | Cygnus olor |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | 152.0 cm (59.8 in) |
| กว้างปีก | 38.6 cm (15.2 in) | 235.0 cm (92.5 in) |
| น้ำหนัก | 423.8333333333333 g (14.95 oz) | 11000.0 g (388.01 oz) |
| อาหาร | Dives for molluscs, crustaceans, and aquatic invertebrates; digs in mudflats; diet heavily invertebrate year-round. | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| จำนวนไข่ | 5-15 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Cape Teal
Saline, alkaline, and freshwater lakes and pans across sub-Saharan Africa from the Sahel to South Africa. Strongly associated with soda and saline lakes in East Africa's Rift Valley. Nomadic.
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Cape Teal
Female gives a soft, nasal quacking series; male produces a high, piping whistle. The male's clear, piping call is unexpected for a teal; heard on Cape and Namibian estuaries.
Mute Swan
Despite its name, not truly mute: gives hissing snorts and low grunting when threatened. Wings produce a loud rhythmic whistling throbbing sound in flight.
Geographic Range & Migration
Cape Teal
Breeds across the Palearctic; winters on coasts from western Africa around to Southeast Asia and Australia.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
สถานะการอนุรักษ์
Cape Teal
Mute Swan
How to Tell Them Apart
Cape Teal
Pale gray-brown plumage with fine dark spotting on breast. Pink bill with dark ridge. Iridescent green-and-black speculum with white borders. Pale head. Sexes similar. African saline and alkaline lake specialist.
Mute Swan
All-white plumage in adults. Cygnets are grey-brown, gradually whitening over the first year. Graceful S-curved neck posture is distinctive.
Orange bill with a prominent black knob at the base, larger in males
About These Birds
Cape Teal
A small pale grey teal with pink bill, orange-red eye, and green speculum. The palest duck in Africa. Found on saline and alkaline lakes and pans across sub-Saharan Africa. Nomadic; follows shifting water availability. Feeds by filter-dabbling.
Mute Swan
The mute swan is one of the heaviest flying birds, with males weighing up to 14 kg. Despite its name, it is not truly mute, producing hissing, grunting, and snorting sounds. Mute swans form lifelong pair bonds and their aggressive defense of nesting territory is well known.