Arctic Tern vs Northern Cardinal
Sterna paradisaea 比較対象 Cardinalis cardinalis
Side-by-Side Comparison
| 属性 | Arctic Tern | Northern Cardinal |
|---|---|---|
| 学名 | Sterna paradisaea | Cardinalis cardinalis |
| 目 | Charadriiformes | Passeriformes |
| 科 | Laridae | Cardinalidae |
| 保全状況 | Least Concern | Least Concern |
| 体長 | 34.0 cm (13.4 in) | 22.0 cm (8.7 in) |
| 翼開長 | 80.0 cm (31.5 in) | 30.0 cm (11.8 in) |
| 体重 | 110.0 g (3.88 oz) | 44.0 g (1.55 oz) |
| 食性 | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Seeds, grains, fruits, and insects. Especially fond of sunflower seeds at bird feeders. Feeds mainly … |
| 一腹卵数 | 2-3 | 1-5 |
| 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.
Northern Cardinal
Woodland edges, thickets, gardens, and suburban areas. Prefers dense shrubby habitats for nesting.
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.
Northern Cardinal
Loud, clear whistled phrases: 'cheer-cheer-cheer' and 'birdy-birdy-birdy'. Both male and female sing; female song is softer. Alarm is a sharp metallic 'chink'.
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.
Northern Cardinal
Eastern and central North America from southern Canada to Mexico and Guatemala. Expanding range northward.
保全状況
Arctic Tern
Northern Cardinal
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
Northern Cardinal
Males are brilliant crimson red overall with a black face mask. Females are warm buffy brown with reddish tinges on wings, crest, and tail.
Thick, conical, bright orange-red bill
About These Birds
Arctic Tern
キョクアジサシはあらゆる動物の中で最長の渡りを行い、毎年北極と南極を往復する約7万kmの旅をする。30年の寿命の中に、月への往復3回分に相当する飛翔距離を積み重ねる可能性がある。地球上でどの生物よりも多くの昼光を経験するこの驚異的な鳥は、太陽を追い続ける。
Northern Cardinal
The northern cardinal is the state bird of seven US states, more than any other species. Unlike many songbirds, both males and females sing, often in duets. Cardinals do not migrate and their brilliant red plumage against winter snow makes them a favorite among backyard birdwatchers.