Charrán Ártico vs Greater Crested Tern
Sterna paradisaea comparado con Thalasseus bergii
Side-by-Side Comparison
| Atributo | Charrán Ártico | Greater Crested Tern |
|---|---|---|
| Nombre científico | Sterna paradisaea | Thalasseus bergii |
| Orden | Charadriiformes | Charadriiformes |
| Familia | Laridae | Laridae |
| Estado de conservación | Least Concern | Least Concern |
| Longitud | 34,0 cm (13.4 in) | — |
| Envergadura | 80,0 cm (31.5 in) | 71,6 cm (28.2 in) |
| Peso | 110,0 g (3.88 oz) | 367,75 g (12.97 oz) |
| Dieta | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | -- |
| Tamaño de la puesta | 2-3 | 1-3 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Hábitats compartidos
Charrán Ártico only
Greater Crested 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.
Greater Crested 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.
Greater Crested Tern
Estado de conservación
Charrán Ártico
Greater Crested 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
Greater Crested 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 …
Greater Crested Tern
Greater Crested Tern, 43–48 cm, is the largest crested tern of the Indo-Pacific, breeding from South Africa to Japan and Australia. Yellow-green bill, prominent black crest, grey back. Colonial breeder on sand islands; plunge-dives for fish. Partially migratory; disperses across Indian and Pacific Oceans.