Individual variation in orientation promotes a 3000-km latitudinal change in wintering grounds in a long-distance migratory raptor
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Título: | Individual variation in orientation promotes a 3000-km latitudinal change in wintering grounds in a long-distance migratory raptor |
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Autor/es: | Mellone, Ugo | Lucia, Giuseppe | Mallia, Egidio | Urios, Vicente |
Grupo/s de investigación o GITE: | Zoología de Vertebrados |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Ciencias de la Tierra y del Medio Ambiente | Universidad de Alicante. Centro Iberoamericano de la Biodiversidad |
Palabras clave: | Flocking | Migration | Navigation | Raptors | Short-toed Eagle | Social interactions |
Área/s de conocimiento: | Zoología |
Fecha de publicación: | oct-2016 |
Editor: | Wiley |
Cita bibliográfica: | Ibis. 2016, 158(4): 887-893. doi:10.1111/ibi.12401 |
Resumen: | Migrating juvenile birds rely on endogenous information in choosing the direction in which to fly, but such input may be overridden by social interactions with experienced individuals. We tagged seven juvenile Short-toed Eagles Circaetus gallicus with GPS transmitters in southern Italy. This trans-Saharan migrant flies mainly by soaring and is therefore not well adapted to performing long water crossings. Five of the seven tagged juveniles used the longer but apparently safer route towards the Strait of Gibraltar, and two migrated along a southerly trajectory and subsequently spent the winter in Sicily, apparently forced to do so by the 150-km-wide Sicily Channel. One of these individuals took the longer route the following autumn. These results, combined with long-term (15 years) visual field observations involving thousands of individuals, suggest that inexperienced Short-toed Eagles may learn their migratory routes from experienced adults, whereas some of them migrate south in response to an innate orientation instinct. Transport costs, inherited information and geography apparently interact, forcing some Short-toed Eagles to winter 3000 km to the north of the majority of their conspecifics. |
Patrocinador/es: | The study has been funded by the Osservatorio Faunistico of Regione Basilicata through the Parco Regionale Gallipoli Cognato – Piccole Dolomiti Lucane. |
URI: | http://hdl.handle.net/10045/62510 |
ISSN: | 0019-1019 (Print) | 1474-919X (Online) |
DOI: | 10.1111/ibi.12401 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | © 2016 British Ornithologists’ Union |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1111/ibi.12401 |
Aparece en las colecciones: | INV - ZV - Artículos Científicos |
Archivos en este ítem:
Archivo | Descripción | Tamaño | Formato | |
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2016_Mellone_etal_Ibis_final.pdf | Versión final (acceso restringido) | 644,2 kB | Adobe PDF | Abrir Solicitar una copia |
2016_Mellone_etal_Ibis_accepted.pdf | Accepted Manuscript (acceso abierto) | 587,43 kB | Adobe PDF | Abrir Vista previa |
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