Alca

28/12/2009 109 Palabras

Del sueco alka.) Género de aves caradriformes de la familia de los álcidos; habitan en los mares nórdicos y son excelentes nadadores. Las alcas comunes, Alca torda, miden de 41 a 48 cm, tienen la parte superior de color negro y la inferior, blanca, cuello corto, cabeza robusta y pico comprimido lateralmente, cruzado por una...

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