Surf Scoter vs Mute Swan
Melanitta perspicillata เปรียบเทียบกับ Cygnus olor
Side-by-Side Comparison
| คุณสมบัติ | Surf Scoter | Mute Swan |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Melanitta perspicillata | Cygnus olor |
| อันดับ | Anseriformes | Anseriformes |
| วงศ์ตระกูล | Anatidae | Anatidae |
| สถานะการอนุรักษ์ | Least Concern | Least Concern |
| ความยาว | — | 152.0 cm (59.8 in) |
| กว้างปีก | 45.3 cm (17.8 in) | 235.0 cm (92.5 in) |
| น้ำหนัก | 1019.75 g (35.97 oz) | 11000.0 g (388.01 oz) |
| อาหาร | Dives for molluscs, crustaceans, and herring spawn in coastal waters. Uses its distinctive swollen bill … | Submerged aquatic vegetation, algae, and grass. Feeds by upending in shallow water, reaching depths of … |
| จำนวนไข่ | 5-9 | 5-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Mute Swan
Lakes, slow rivers, estuaries, and coastal lagoons. Often associated with parks and ornamental waters in Europe.
Song & Call Comparison
Surf Scoter
Male produces a low, gurgling burble; female gives a crow-like, guttural cawing. The female's rasping, crow-like call is startling; males make soft, liquid gurgling notes during courtship.
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
Surf Scoter
Breeds in boreal forests and tundra of northern North America. Winters along Pacific and Atlantic coasts south to Baja California and the Carolinas.
Mute Swan
Native to Europe and western Asia. Introduced to North America, South Africa, Australia, and New Zealand.
สถานะการอนุรักษ์
Surf Scoter
Mute Swan
How to Tell Them Apart
Surf Scoter
Male is entirely glossy black except for white patches on forehead and nape; bill tricolored orange, red, and white with black spot. Female sooty-brown with two white facial patches.
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
Surf Scoter
A medium-sized diving duck (~1 kg) of the family Anatidae, males all-black with a multicolored bill and white head patches. Breeds on boreal lakes and wetlands of North America; winters in coastal bays and surf zones. Dives for mussels, clams, and crustaceans. Least Concern; populations are considered stable overall.
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.