Arctic Tern vs Glaucous-winged Gull
Sterna paradisaea comparé à Larus glaucescens
Side-by-Side Comparison
| Attribut | Arctic Tern | Glaucous-winged Gull |
|---|---|---|
| Nom scientifique | Sterna paradisaea | Larus glaucescens |
| Ordre | Charadriiformes | Charadriiformes |
| Famille | Laridae | Laridae |
| Statut de conservation | Least Concern | Least Concern |
| Longueur | 34,0 cm (13.4 in) | — |
| Envergure | 80,0 cm (31.5 in) | 82,4 cm (32.4 in) |
| Poids | 110,0 g (3.88 oz) | 1095,0166666666667 g (38.63 oz) |
| Régime alimentaire | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Taille de la couvée | 2-3 | 1-6 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partagés
Arctic Tern only
Glaucous-winged Gull only
Aucun(e)
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.
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.
Glaucous-winged Gull
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.
Glaucous-winged Gull
Statut de conservation
Arctic Tern
Glaucous-winged Gull
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
Glaucous-winged Gull
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.
Glaucous-winged Gull
Glaucous-winged Gull, 56–68 cm, is the common large gull of the North Pacific from Alaska to California. Distinctive pale grey wing tips (not black) give a uniform grey appearance. Omnivore; forages on rocky shores and at harbours. Hybridises with Western, Herring, and Glaucous Gulls.