Arctic Tern vs Wilson's Bird-of-paradise
Sterna paradisaea เปรียบเทียบกับ Cicinnurus respublica
Side-by-Side Comparison
| คุณสมบัติ | Arctic Tern | Wilson's Bird-of-paradise |
|---|---|---|
| ชื่อวิทยาศาสตร์ | Sterna paradisaea | Cicinnurus respublica |
| อันดับ | Charadriiformes | Passeriformes |
| วงศ์ตระกูล | Laridae | Paradisaeidae |
| สถานะการอนุรักษ์ | Least Concern | Near Threatened |
| ความยาว | 34.0 cm (13.4 in) | 16.0 cm (6.3 in) |
| กว้างปีก | 80.0 cm (31.5 in) | 19.0 cm (7.5 in) |
| น้ำหนัก | 110.0 g (3.88 oz) | 55.0 g (1.94 oz) |
| อาหาร | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Fruit and insects gleaned from the forest canopy and subcanopy. Particularly favors figs. |
| จำนวนไข่ | 2-3 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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Arctic Tern only
Wilson's Bird-of-paradise only
Arctic Tern
Breeds on coastal and tundra habitats. Spends most of its life at sea over the open ocean. Nests in colonies on beaches and rocky shores.
Wilson's Bird-of-paradise
Lowland and hill forests on the small islands of Waigeo and Batanta in the Raja Ampat archipelago, Indonesia.
Song & Call Comparison
Arctic Tern
A sharp, grating 'kree-yah' alarm call. Also gives 'kik-kik-kik' near the nest. Highly aggressive vocally during the Arctic breeding season. Calls are harsh and insistent.
Wilson's Bird-of-paradise
Male gives a harsh, nasal 'waah' or 'eeah' from display perch. Song is poorly documented in wild. Also produces mechanical rattling wing sounds during display flights.
Geographic Range & Migration
Arctic Tern
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Wilson's Bird-of-paradise
Endemic to the islands of Waigeo and Batanta off the northwestern tip of New Guinea, Indonesia.
สถานะการอนุรักษ์
Arctic Tern
Wilson's Bird-of-paradise
How to Tell Them Apart
Arctic Tern
Pale grey upperparts, white underparts with a black cap. Blood-red bill and short red legs. Deeply forked tail streamers. Winter adults lose the full black cap.
Slender, pointed, bright red bill
Wilson's Bird-of-paradise
Males have a brilliant red back, yellow nape, turquoise blue bare crown, and green breast shield. Violet-blue curled tail wires. Females are brownish with bare blue crown.
Short, slightly curved greyish bill
About These Birds
Arctic Tern
The Arctic tern holds the record for the longest known migration of any animal, traveling roughly 70,000 km annually from Arctic to Antarctic and back. Over its 30-year lifespan, it may fly the equivalent of three round trips to the Moon. This remarkable bird experiences more daylight than any other creature on Earth.
Wilson's Bird-of-paradise
Wilson's bird-of-paradise is one of the most extraordinarily colored birds on Earth. Males meticulously clear a patch of forest floor as a display court, removing every leaf and twig. The species was virtually unknown to science until the late 20th century due to its restricted island range.