Rook
Corvus frugilegus
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Sobre
Gralha-calva (Corvus frugilegus) — Gralha colonial europeia reconhecida pela pele nua cinzenta na base do bico dos adultos. Plumagem negra com reflexo azul-violeta. Habita campos agrícolas abertos e ninhos em colônias nas copas de árvores. Migratória no inverno. Alimenta-se de minhocas, insetos e sementes. Forma enormes dormidas no inverno.
Physical Description
| Measurement | Value | Imperial |
|---|---|---|
| Envergadura | 62,5 cm | 24.6 in |
| Peso | 451,8333333333333 g | 15.94 oz |
Habitat & Range
Estado de conservação
Comportamento e reprodução
Nidificação
Nest type: CP. Incubation: 16-18 days. Fledging: 30-36 days.
Tamanho da postura
2-7
Taxonomia
| Kingdom | Animalia |
| Phylum | Chordata |
| Class | Aves |
| Ordem | Passeriformes (Songbirds) |
| Família | Corvidae (Crows, Jays & Magpies) |
| Genus | Corvus |
| Espécies | Corvus frugilegus |
Distribution
Rook has been recorded in 6 countries.
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External Databases
Perguntas frequentes
Is the Rook endangered?
How does the Rook nest?
How big is the Rook?
What order and family does the Rook belong to?
Similar Birds
Other species in the Corvidae family