Charrán Ártico vs Kerguelen Tern
Sterna paradisaea comparado con Sterna virgata
Side-by-Side Comparison
| Atributo | Charrán Ártico | Kerguelen Tern |
|---|---|---|
| Nombre científico | Sterna paradisaea | Sterna virgata |
| Orden | Charadriiformes | Charadriiformes |
| Familia | Laridae | Laridae |
| Estado de conservación | Least Concern | Near Threatened |
| Longitud | 34,0 cm (13.4 in) | — |
| Envergadura | 80,0 cm (31.5 in) | 50,0 cm (19.7 in) |
| Peso | 110,0 g (3.88 oz) | 127,5 g (4.50 oz) |
| Dieta | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Tamaño de la puesta | 2-3 | 1-2 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Hábitats compartidos
Charrán Ártico only
Kerguelen Tern only
Ninguno
Charrán Ártico
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
Charrán Ártico
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.
Kerguelen Tern
Geographic Range & Migration
Charrán Ártico
Breeds in the Arctic and sub-Arctic. Migrates to the Antarctic, experiencing two summers per year. Found on every ocean.
Kerguelen Tern
Estado de conservación
Charrán Ártico
Kerguelen Tern
How to Tell Them Apart
Charrán Ártico
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
Kerguelen Tern
About These Birds
Charrán Ártico
El charrán ártico realiza la migración más larga de todos los animales, viajando cada año entre sus zonas de reproducción árticas y sus zonas de invernada antárticas, con una ida y vuelta de más de 70.000 km. Gracias a esta ruta, experimenta más horas de luz solar al año que cualquier otra criatura. Pequeño y ágil, pesa unos 100 g y se caracteriza por su pico y patas de color rojo sangre. Defiende agresivamente sus colonias de cría, llegando a …
Kerguelen Tern
Kerguelen Tern, 31–33 cm, is restricted to a handful of sub-Antarctic islands including Kerguelen and Crozet. Darker grey than Antarctic Tern, with reddish bill. Piscivore and invertivore; forages in kelp beds and coastal waters. Near Threatened; small, isolated population vulnerable to introduced predators.