Arctic Tern vs Common Myna
Sterna paradisaea comparado com Acridotheres tristis
Side-by-Side Comparison
| Atributo | Arctic Tern | Common Myna |
|---|---|---|
| Nome científico | Sterna paradisaea | Acridotheres tristis |
| Ordem | Charadriiformes | Passeriformes |
| Família | Laridae | Sturnidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 34,0 cm (13.4 in) | 25,0 cm (9.8 in) |
| Envergadura | 80,0 cm (31.5 in) | 38,0 cm (15.0 in) |
| Peso | 110,0 g (3.88 oz) | 120,0 g (4.23 oz) |
| Dieta | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Omnivorous — insects, fruit, grain, and kitchen scraps. Bold and opportunistic around human settlements. |
| Tamanho da postura | 2-3 | 2-6 |
| 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 Myna
Urban areas, farmland, and open woodland. Closely associated with humans and one of the most successful avian urban colonizers.
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 Myna
A noisy, cackling chatter and melodious whistling mixed together. An accomplished mimic of other birds and sounds. Gives repeated 'mee-ow' and harsh 'quarr' alarm calls.
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 Myna
Native to South and Southeast Asia. Introduced and invasive in Australia, South Africa, Middle East, and many Pacific islands.
Estado de conservação
Arctic Tern
Common Myna
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 Myna
Brown body with a glossy black hood, yellow bill, and bare yellow skin behind the eye. White wing patches conspicuous in flight. Yellow legs.
Strong, slightly curved yellow 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.
Common Myna
Maina-comum (Acridotheres tristis) — 23-26 cm. Pássaro da família dos estorninhos originário do sul da Ásia, introduzido em numerosas regiões tropicais onde se tornou espécie invasora problemática. Plumagem castanho-escura com cabeça negra e marcas brancas nas asas. Vocaliza com grande variedade de sons. Onívoro oportunista extremamente adaptável.