Mute Swan vs Pink-headed Duck
Cygnus olor เปรียบเทียบกับ Rhodonessa caryophyllacea
Side-by-Side Comparison
| คุณสมบัติ | Mute Swan | Pink-headed Duck |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Cygnus olor | Rhodonessa caryophyllacea |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Critically Endangered |
| ความยาว | 152.0 cm (59.8 in) | — |
| กว้างปีก | 235.0 cm (92.5 in) | 50.2 cm (19.8 in) |
| น้ำหนัก | 11000.0 g (388.01 oz) | 963.8 g (34.00 oz) |
| อาหาร | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … | Probably extinct; fed on fish, molluscs, and aquatic invertebrates in Indian subcontinent wetlands; diet recorded … |
| จำนวนไข่ | 5-7 | 5-10 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
ถิ่นที่อยู่อาศัยร่วมกัน
Mute Swan only
Pink-headed Duck only
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Pink-headed Duck
Historically inhabited secluded freshwater pools, lakes, and marshes in tall grass and forest in the Ganges and Brahmaputra plains of India, Nepal, and Myanmar. Now possibly extinct or extremely rare.
Song & Call Comparison
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.
Pink-headed Duck
Critically Endangered; likely gives a soft, resonant quacking note judging from close relatives. The Pink-headed Duck may have produced a distinctive, mellow whistle unlike other pochards.
Geographic Range & Migration
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
Pink-headed Duck
Breeds in the northern prairies of Canada and US; winters in the Gulf Coast and along the Atlantic coast south to Florida.
สถานะการอนุรักษ์
Mute Swan
Pink-headed Duck
How to Tell Them Apart
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
Pink-headed Duck
Unmistakable; males have strikingly bright pink head and neck contrasting with dark chocolate-brown body and wings. Pink bill. Females have paler pink head. Possibly extinct; last confirmed 1949. Critically endangered …
About These Birds
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.
Pink-headed Duck
Possibly extinct; a distinctive large diving duck formerly found in the Ganges plains of India and Myanmar. Males had a deep pink head and neck contrasting with dark chocolate-brown body. Last confirmed sightings in the 1940s. One of Asia's greatest bird mysteries.