Carracas del mundo
Una de las incuestionables bellezas ornitológicas de Iberia son las carracas, pero ¿sabes cuántas especies de carraca hay en el mundo? Pues solo son 13, todas se agrupan en dos géneros, Coracias (9) y Eurystomus (4), y ninguna de ellas vive en el continente americano.
Se alimentan de grandes insectos, otros invertebrados o incluso reptiles y pequeños roedores. Todas nidifican en agujeros y la mayoría viven en hábitats abiertos, a menudo con algunos árboles, como bosques, sabanas e incluso los bordes de densos bosques tropicales.
El último Libro Rojo de las Aves de España ha incluido a la carraca europea en la categoría "en peligro" por su disminución superior al 80% en algunas zonas y por la desaparición en zonas donde antiguamente era abundante.
Fuente y dibujos: Birds of the World
ENGLISH VERSION:
One of the unquestionable ornithological beauties of Iberia are the Rollers, but do you know how many species of Roller there are in the world? There are only 13, all grouped into two genera, Coracias (9) and Eurystomus (4), and none of them live in the Americas.
Only the European Roller lives on our continent, the rest are mainly distributed in Africa, but also in southern Asia and only one breeds in Australia (Dollarbird). Only two species present conservation problems (IUCN data), namely the European Roller, due to the effects of intensive agriculture, and the Purple-winged Roller, endemic to the island of Sulawesi, where it has declined rapidly due to forest clearance.
Roller birds are large-headed birds with robust beaks. Their name in English (Roller) refers to their acrobatic flights, in which they launch themselves rapidly towards the ground with their wings and body as if rolling back and forth. In Spanish, "carraca" is an onomatopoeic name that comes from the sound of the males during nuptial behaviour, similar to the rattling of a ‘carraca’, a wooden instrument in which the teeth of a wheel, lifting one or more reeds consecutively, produce a dry and unpleasant noise (RAE definition).
They feed on large insects, other invertebrates or even reptiles and small rodents. They all nest in holes and most live in open habitats, often with a few trees, such as forests, savannahs and even the edges of dense tropical rainforests.
The latest Red Book of Spanish Birds has included the European Roller in the ‘endangered’ category because of its decline of more than 80% in some areas and its disappearance in areas where it was formerly abundant.
Comentarios
Publicar un comentario