Arctic Tern vs Wilson's Bird-of-paradise
Sterna paradisaea 对比 Cicinnurus respublica
Side-by-Side Comparison
| 属性 | Arctic Tern | Wilson's Bird-of-paradise |
|---|---|---|
| 学名 | Sterna paradisaea | Cicinnurus respublica |
| 目 | Charadriiformes | Passeriformes |
| 科 | Laridae | Paradisaeidae |
| 保护状况 | Least Concern | Near Threatened |
| 体长 | 34.0 cm (13.4 in) | 16.0 cm (6.3 in) |
| 翼展 | 80.0 cm (31.5 in) | 19.0 cm (7.5 in) |
| 体重 | 110.0 g (3.88 oz) | 55.0 g (1.94 oz) |
| 食性 | 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. |
| 产卵数 | 2-3 | -- |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
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.
保护状况
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
北极燕鸥进行所有动物中最长的迁徙，每年从北极繁殖地飞往南极越冬地，往返距离超过70,000公里。体型纤细，翼展约80厘米，全身主要为白色，具黑色头冠和红色喙。无危；繁殖于北极和亚北极海岸及岛屿，全球种群约200万只。
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.