The trans-equatorial loop migration system of Eleonora’s falcon: differences in migration patterns between age classes, regions and seasons

Please use this identifier to cite or link to this item:
Información del item - Informació de l'item - Item information
Title: The trans-equatorial loop migration system of Eleonora’s falcon: differences in migration patterns between age classes, regions and seasons
Authors: Mellone, Ugo | López-López, Pascual | Limiñana, Rubén | Piasevoli, Gvido | Urios, Vicente
Research Group/s: Zoología de Vertebrados
Center, Department or Service: Universidad de Alicante. Departamento de Ciencias Ambientales y Recursos Naturales | Universidad de Alicante. Centro Iberoamericano de la Biodiversidad
Keywords: Eleonora’s falcon | Migration | Satellite telemetry
Knowledge Area: Zoología
Issue Date: Sep-2013
Publisher: Wiley
Citation: Journal of Avian Biology. 2013, 44(5): 417-426. doi:10.1111/j.1600-048X.2013.00139.x
Abstract: Internal factors such as experience (e.g. age) and motivation for breeding, and external ones such as environmental conditions (e.g. meteorology and landscape characteristics) can promote differences in migratory behaviour and routes among seasons, regions and populations. Using satellite telemetry we investigated whether such differences occur and which factors promote them among migrating Eleonora’s falcons breeding in the Mediterranean area (Spain and Croatia) and wintering in Madagascar. We found that during autumn migration no age differences occur when crossing the Sahara desert, but in the remaining African regions, juveniles were more prone than adults to fly at a slower and more tortuous rate, as well as exhibiting longer stop-overs, particularly in the Sahel region. Such differences might be promoted by a lower foraging and pre-migratory fattening efficiency in juveniles. During spring, routes were significantly more eastern than during autumn, resulting in a loop migration occurring in all studied populations. This could be accounted by seasonal variation in the distribution of trophic resources. Our results show that Eleonora’s falcons integrate spatially seasonal changing resources on a continental scale throughout their annual cycle, changing their movement patterns in response to internal (age) and external (habitat) factors. This loop migration pattern may prove to be widespread among other Palearctic trans-continental migratory bird species.
Sponsor: The Terra Natura Foundation and the ‘Servicio de Biodiversidad’ (Generalitat Valenciana) funded the Spanish part of the project. UM is supported by an FPU grant of the Spanish Ministry of Education (reference AP2008-0947). PLL is supported by a ‘Juan de la Cierva’ postdoctoral grant of the Spanish Ministry of Economy and Competitiveness (reference JCI-2011-09588).
ISSN: 0908-8857 (Print) | 1600-048X (Online)
DOI: 10.1111/j.1600-048X.2013.00139.x
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2013 The Authors. Journal of Avian Biology © 2013 Nordic Society Oikos
Peer Review: si
Publisher version:
Appears in Collections:INV - ZV - Artículos Científicos
INV - CYT - Otros Trabajos de Investigación

Files in This Item:
Files in This Item:
File Description SizeFormat 
Thumbnail2013_Mellone_etal_JAB_final.pdfVersión final (acceso restringido)13,65 MBAdobe PDFOpen    Request a copy

Items in RUA are protected by copyright, with all rights reserved, unless otherwise indicated.