Arctic Tern vs Common Kestrel
Sterna paradisaea comparado com Falco tinnunculus
Side-by-Side Comparison
| Atributo | Arctic Tern | Common Kestrel |
|---|---|---|
| Nome científico | Sterna paradisaea | Falco tinnunculus |
| Ordem | Charadriiformes | Falconiformes |
| Família | Laridae | Falconidae |
| Estado de conservação | Least Concern | Least Concern |
| Comprimento | 34,0 cm (13.4 in) | 34,0 cm (13.4 in) |
| Envergadura | 80,0 cm (31.5 in) | 74,0 cm (29.1 in) |
| Peso | 110,0 g (3.88 oz) | 190,0 g (6.70 oz) |
| Dieta | Small fish and crustaceans caught by plunge-diving from the air. Hovers briefly before diving. | Primarily voles and mice, also lizards, large insects, and small birds. Hunts by hovering at … |
| Tamanho da postura | 2-3 | 1-7 |
| Population Trend | — | — |
Size Comparison
Habitat Comparison
Habitats partilhados
Arctic Tern only
Nenhum
Common Kestrel only
Nenhum
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 Kestrel
Open country including farmland, grasslands, moorland, and urban areas. Common along motorways and in cities across Europe.
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 Kestrel
A shrill, repeated 'kee-kee-kee-kee' or 'kik-ik-ik', especially near nest. Alarm call is a nasal chattering. Generally less vocal than larger falcons. Calls ring clearly in open country.
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 Kestrel
Europe, Asia, and Africa. One of the most common and widespread raptors in the Old World.
Estado de conservação
Arctic Tern
Common Kestrel
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 Kestrel
Males have a blue-grey head and tail with a rufous back spotted with black. Females are rufous-brown with heavy barring. Both have a dark moustachial stripe.
Short, hooked grey bill with a yellow cere
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 Kestrel
Peneireiro-vulgar (Falco tinnunculus) — 32-38 cm. Falcão mais comum da Europa e Ásia, reconhecível pelo pairar estacionário com batimento rápido de asas enquanto caça. Macho com cabeça e cauda cinzentas e dorso castanho avermelhado manchado; fêmea mais barrada. Habita campos abertos, zonas costeiras e áreas urbanas. Alimenta-se de pequenos mamíferos, insetos e lagartos.