Arctic Tern vs Common Starling
Sterna paradisaea 对比 Sturnus vulgaris
Side-by-Side Comparison
| 属性 | Arctic Tern | Common Starling |
|---|---|---|
| 学名 | Sterna paradisaea | Sturnus vulgaris |
| 目 | Charadriiformes | Passeriformes |
| 科 | Laridae | Sturnidae |
| 保护状况 | Least Concern | Least Concern |
| 体长 | 34.0 cm (13.4 in) | 21.5 cm (8.5 in) |
| 翼展 | 80.0 cm (31.5 in) | 37.0 cm (14.6 in) |
| 体重 | 110.0 g (3.88 oz) | 78.0 g (2.75 oz) |
| 食性 | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Omnivorous — insects and larvae (especially leatherjackets), earthworms, fruit, and seeds. Probes soil with open … |
| 产卵数 | 2-3 | 4-7 |
| 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.
Common Starling
Open countryside, farmland, parks, and urban areas. Forms enormous communal roosts in winter, especially in urban environments.
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.
Common Starling
A complex mimic: rattles, whistles, clicks, and squeaks mixed with imitations of other birds. Song is a continuous medley. Also gives harsh 'scheer' alarm and chattering.
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.
Common Starling
Native to Europe, western Asia, and North Africa. Introduced to North America, South Africa, Australia, and New Zealand.
保护状况
Arctic Tern
Common Starling
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
Common Starling
Glossy black plumage with iridescent purple and green sheen in breeding season. Winter plumage shows white spotting. Short tail and pointed wings in flight.
Long, pointed bill — yellow in breeding season, dark in winter
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。
Common Starling
紫翅椋鸟（Sturnus vulgaris）— 原产于欧亚大陆，已引入北美、澳大利亚和南非。具金属光泽的羽毛和白色斑点为特征。能形成壮观的大群（椋鸟旋舞）。