Arctic Tern vs European Robin
Sterna paradisaea в сравнении с Erithacus rubecula
Side-by-Side Comparison
| Характеристика | Arctic Tern | European Robin |
|---|---|---|
| Научное название | Sterna paradisaea | Erithacus rubecula |
| Отряд | Charadriiformes | Passeriformes |
| Семейство | Laridae | Muscicapidae |
| Охранный статус | Least Concern | Least Concern |
| Длина | 34,0 cm (13.4 in) | 14,0 cm (5.5 in) |
| Размах крыльев | 80,0 cm (31.5 in) | 21,0 cm (8.3 in) |
| Масса | 110,0 g (3.88 oz) | 18,0 g (0.63 oz) |
| Питание | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Insects, worms, and berries. Often follows gardeners and large animals to catch invertebrates disturbed from … |
| Размер кладки | 2-3 | 4-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Общие среды обитания
Нет
Arctic Tern only
European Robin 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.
European Robin
Woodlands, hedgerows, parks, and gardens across Europe. Remarkably tame around humans, especially in Britain.
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.
European Robin
Exquisite, melancholic melody of thin whistled phrases, rising and falling softly. Rich, warbling song year-round; both sexes sing. Alarm call is a sharp 'tic-tic-tic'.
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.
European Robin
Europe, western Asia, and parts of North Africa. Northern populations migrate south in winter; western European populations are largely resident.
Охранный статус
Arctic Tern
European Robin
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
European Robin
Olive-brown upperparts with a warm orange-red breast and face bordered by grey. White belly and undertail coverts.
Thin, pointed dark brown 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.
European Robin
The European robin is one of the most beloved birds in Britain, where it is the unofficial national bird. Despite its friendly demeanor toward humans, robins are fiercely territorial against their own kind, singing year-round to defend territory. Their distinctive song is one of the first to be heard at dawn.