| Titre : | Migración y ecología del movimiento de la población española de Cernícalo primilla. |
| Titre original: | Migration and ecology of the Spanish Lesser Kestrel population movement. |
| Auteurs : | SEO/BirdLife - EBD, Auteur ; Lina Lopez-Ricaurte, Auteur ; Daniel García-Silveira, Auteur ; Javier Bustamante., Auteur |
| Type de document : | Ouvrage |
| Editeur : | Madrid : SEO/BirdLife., 2023 |
| ISBN/ISSN/EAN : | 978-84-12-65555-1 |
| Format : | 148 |
| Langues: | Espagnol |
| Mots-clés : | Espagne ; Falco naumanni ; Dynamique population ; Migration ; Autoécologie animale |
| Résumé : |
LESSER KESTREL MIGRATION
Animal movement and their migrations have intrigued humanity for thousands of years since Aristotle. Field observations, the advent of binocu-lars and the development of bird ringing throughout the 20th century, have provided valuable information in many fields of animal ecology, including reproduction, migration, timing, population dynamics, and monitoring, among others. However, these methods have a strong historical bias towards site-specific observations, of places where there is a strong re-sighting effort. Fortunately, remote tracking technologies are vastly expanding the scale and precision at which researchers can track and observe bird movement and migration, in a less biased way than ringing. Consequently, there has been an enormous development of knowledge on the ecology and behaviour of birds throughout their annual cycle, especially of those that migrate long distances to tropical latitudes. In this research, GPS-UHF (ultra-high frequency) solar transmitters and environmental data have been combined. The study aims to analyse the movement patterns during the breeding period and to deepen the knowledge of the migration and wintering period. The study system for carrying out this research is a trans-Sa- haran raptor: the lesser kestrel –Falco naumanni–.Its movement ecology during the breeding season has been studied in detail, but relatively little was known about its migratory and wintering movements. Thanks to the collaboration between different research and conservation groups in Spain, the present study has information on 198 adults lesser kestrels marked at different colonies between 2016 and 2022. MOVEMENT ECOLOGY DURING THE REPRODUCTIVE PERIOD To study the daily movement patterns, home ranges and habitat use of the lesser kestrel during the breeding season, GPS data from 198 individuals (111 males and 87 females) were obtained between 2016 and 2022, with 440 breeding phases being analysed. Our results have confirmed that movement strategies vary according to the breeding phase and sex. During courtship, both sexes prospect around the colony to identify feeding areas, reaching the maximum distances to the nest. Between the end of this phase and incubation, females reduce their movements, while males cover significantly greater accumulated distances as a result of provisioning the female with courtship feedings. In the chick-feeding phase, both sexes participate equally and females spend significantly more time flying, accumulating greater distances by hunting in more distant areas from the colony. Concerning breeding areas, lesser kestrels can prospect areas of approximately 200 km2 during the breeding period, although these are considerably reduced if only the most used feeding areas (130 km2) are considered and there are important variations between colonies. Except during incubation, females showed higher values than males, although these differences were not significant. Finally, the importance of rainfed crops and pastures as feeding areas should be highlighted, as well as the close links between breeding colonies and urban areas. |
| En ligne : | http://www.seo.org/boletin/seguimiento/migracion/09_cernicalo_primilla |
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| Code-barres | Cote | Support | Localisation | Section | Disponibilité |
|---|---|---|---|---|---|
| 11398 | 22233 | Ouvrage | Bibliothèque | Pdoc | Disponible |
