Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area
Three species (Blackcaps, Sylvia atricapilla, Robin Erithacus rebecula and Black Redstart Phoenicurus ochrurus) were studied at five sites in Spain during winters 1981-84 and 1989-1994. Some birds exhibited winter site fidelity. Recoveries occurred mostly within the same winter of ringing. However,...
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Lund University (Suecia)
1995
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oai-TES00000085172019-07-14Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean areaCuadrado, MarianoOverwintering strategiessite-attachmentanti-predationownerfloatercompetitionSylvia atricapillaErithacusPhoenicurusSaxicolaThree species (Blackcaps, Sylvia atricapilla, Robin Erithacus rebecula and Black Redstart Phoenicurus ochrurus) were studied at five sites in Spain during winters 1981-84 and 1989-1994. Some birds exhibited winter site fidelity. Recoveries occurred mostly within the same winter of ringing. However, some birds were recorded after 5, 3 and 2 yrs, in the three species respectively, in the same area. In Blackcaps, the comparison of the annual survival estimates from two ringing sites (0.47 and 0.49) and the whole Spanish over-wintering population (0.48) suggest site fidelity for most surviving migratory Blackcap in winter. Black Redstars showed a complex territorial system with birds defending 1) stable or 2) temporary territories and 3) birds that did not defend territories (floaters). Both territorial and non-territorial birds seemed to be resident in the area throughout the winter. No differences in morphology or body condition were recorded between territorial and non-territorial birds. Adult males attacked conspecifics at the same rate whether they had adult of female-like plumage (juvenile males and females) which does not support the winter adaptation hypothesis of the delayed plumage maturation in this species (cf. Rohwer & Butcher 1988). Robins defended winter territories against conspecifics, Black Redstarts and Stonechats (Saxicola torquata). Only two behaviors (territorial and non-territorial birds) were recorded. The attack rate against intruders was significant higher 1) on conspecifics, 2) early in the season, 3) when the temperature of previous days had been colder and 4) when the number of intruders per session was lower. Territories did not seem to be the best feeding areas since body condition and feeding intake rate did not differ between owners and floaters. However, owners spent a higher percentage of time hidden and were able to forage in less exposed areas (i.e. closer to shelter) than floaters, suggesting an anti-predation function of territories. These results suggest that site fidelity, familiarity with the winter area and the anti-predation behavior are important factors affecting the distribution, social organization, territoriality and presumably, winter survival of migrant birds in the Mediterranean areaLund University (Suecia)Svensson, Sören (Lund University)1995text (thesis)application/pdfhttps://dialnet.unirioja.es/servlet/oaites?codigo=45974engLICENCIA DE USO: Los documentos a texto completo incluidos en Dialnet son de acceso libre y propiedad de sus autores y/o editores. Por tanto, cualquier acto de reproducción, distribución, comunicación pública y/o transformación total o parcial requiere el consentimiento expreso y escrito de aquéllos. Cualquier enlace al texto completo de estos documentos deberá hacerse a través de la URL oficial de éstos en Dialnet. Más información: https://dialnet.unirioja.es/info/derechosOAI | INTELLECTUAL PROPERTY RIGHTS STATEMENT: Full text documents hosted by Dialnet are protected by copyright and/or related rights. This digital object is accessible without charge, but its use is subject to the licensing conditions set by its authors or editors. Unless expressly stated otherwise in the licensing conditions, you are free to linking, browsing, printing and making a copy for your own personal purposes. All other acts of reproduction and communication to the public are subject to the licensing conditions expressed by editors and authors and require consent from them. Any link to this document should be made using its official URL in Dialnet. More info: https://dialnet.unirioja.es/info/derechosOAI |
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Overwintering strategies site-attachment anti-predation owner floater competition Sylvia atricapilla Erithacus Phoenicurus Saxicola |
| spellingShingle |
Overwintering strategies site-attachment anti-predation owner floater competition Sylvia atricapilla Erithacus Phoenicurus Saxicola Cuadrado, Mariano Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area |
| description |
Three species (Blackcaps, Sylvia atricapilla, Robin Erithacus rebecula and Black Redstart Phoenicurus ochrurus) were studied at five sites in Spain during winters 1981-84 and 1989-1994. Some birds exhibited winter site fidelity. Recoveries occurred mostly within the same winter of ringing. However, some birds were recorded after 5, 3 and 2 yrs, in the three species respectively, in the same area. In Blackcaps, the comparison of the annual survival estimates from two ringing sites (0.47 and 0.49) and the whole Spanish over-wintering population (0.48) suggest site fidelity for most surviving migratory Blackcap in winter.
Black Redstars showed a complex territorial system with birds defending 1) stable or 2) temporary territories and 3) birds that did not defend territories (floaters). Both territorial and non-territorial birds seemed to be resident in the area throughout the winter. No differences in morphology or body condition were recorded between territorial and non-territorial birds. Adult males attacked conspecifics at the same rate whether they had adult of female-like plumage (juvenile males and females) which does not support the winter adaptation hypothesis of the delayed plumage maturation in this species (cf. Rohwer & Butcher 1988). Robins defended winter territories against conspecifics, Black Redstarts and Stonechats (Saxicola torquata). Only two behaviors (territorial and non-territorial birds) were recorded. The attack rate against intruders was significant higher 1) on conspecifics, 2) early in the season, 3) when the temperature of previous days had been colder and 4) when the number of intruders per session was lower. Territories did not seem to be the best feeding areas since body condition and feeding intake rate did not differ between owners and floaters. However, owners spent a higher percentage of time hidden and were able to forage in less exposed areas (i.e. closer to shelter) than floaters, suggesting an anti-predation function of territories.
These results suggest that site fidelity, familiarity with the winter area and the anti-predation behavior are important factors affecting the distribution, social organization, territoriality and presumably, winter survival of migrant birds in the Mediterranean area |
| author2 |
Svensson, Sören (Lund University) |
| author_facet |
Svensson, Sören (Lund University) Cuadrado, Mariano |
| format |
text (thesis) |
| author |
Cuadrado, Mariano |
| author_sort |
Cuadrado, Mariano |
| title |
Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area |
| title_short |
Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area |
| title_full |
Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area |
| title_fullStr |
Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area |
| title_full_unstemmed |
Site fidelity and territorial behaviour of some migratory passerine species overwintering in the Mediterranean area |
| title_sort |
site fidelity and territorial behaviour of some migratory passerine species overwintering in the mediterranean area |
| publisher |
Lund University (Suecia) |
| publishDate |
1995 |
| url |
https://dialnet.unirioja.es/servlet/oaites?codigo=45974 |
| work_keys_str_mv |
AT cuadradomariano sitefidelityandterritorialbehaviourofsomemigratorypasserinespeciesoverwinteringinthemediterraneanarea |
| _version_ |
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