gralha-cinzenta
Corvus cornix
Crows, Jays, and Magpies (Corvidae) · Passeriformes (Passeriformes)
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Revisado
Muitas vezes confundido com
Nos quizzes, os jogadores mais confundem gralha-cinzenta com estas aves—ou esta espécie foi escolhida por engano, ou o contrário.
| Espécies | Confusões |
|---|---|
| gralha-preta Corvus corone | 43 |
| gralha-dáurica Coloeus dauuricus | 24 |
| corvo Corvus corax | 19 |
| gralha-calva Corvus frugilegus | 13 |
| gralha-de-nuca-cinzenta Coloeus monedula | 4 |
Família
Corvidae is a cosmopolitan family of oscine passerine birds that contains the crows, ravens, rooks, magpies, jackdaws, jays, treepies, choughs, and nutcrackers. In colloquial terms, the crow family is made up of corvids; currently 135 species are included. The genus Corvus containing 47 species makes up over a third of the entire family.
Ordem
A passerine () is any bird of the order Passeriformes (; from Latin passer 'sparrow' and formis '-shaped'), which includes more than half of all bird species. Sometimes known as perching birds, passerines generally have an anisodactyl arrangement of their toes (three pointing forward and one back), which facilitates perching. With more than 140 families and some 6,500 identified species, Passeriformes is the largest order of birds and one of the most diverse clades of terrestrial vertebrates, representing 60% of …