caa a22 4500 463176308 CHVBK 20180406164827.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10336-006-0113-1 doi (NATIONALLICENCE)springer-10.1007/s10336-006-0113-1 Why do female Lesser Spotted Eagles ( Aquila pomarina ) visit strange nests remote from their own? [Elektronische Daten] [Bernd-Ulrich Meyburg, Christiane Meyburg, Florian Franck-Neumann] There is very little confirmed information on the social organisation of breeding Lesser Spotted Eagle populations, the turnover rate of adults, and their nest-site and partner fidelity. According to established knowledge, however, breeding individuals are territorial and defend at least the immediate vicinity of the nest site against their own species. It has further been thought that females rearing young, as with the females of other raptor species, remain within a radius of only a few kilometres of their eyrie. Using GPS satellite telemetry and DNA microsatellite analysis (DNA STR typing), we were able to disprove this prevailing hypothesis. A satellite-tracked female flew over 50km away from her eyrie (D) in at least two different directions and visited at least one other occupied eyrie (T). It was also established that at least two strange females arrived at her eyrie, which contained young, from as far away as 57km, and probably remained there for some considerable time. The pool of alleles represented at the different loci analysed, as well as the distribution of these alleles among the individuals, excludes the possibility that these females could be sisters or even half-sisters. Visits of strange eagles at this eyrie were also confirmed by direct observation. It can therefore be assumed that males only exhibit territorial behaviour towards their own sex and not towards strange females and that females do not exhibit territorial behaviour towards other females; but all these assumptions must be confirmed by further studies. For the first time it could be proved by means of microsatellite analysis that almost all females studied used the same breeding site for 2consecutive years. The longest established period in which both partners of a pair remained at the same breeding site was 3 consecutive years. Dt. Ornithologen-Gesellschaft e.V., 2007 Lesser Spotted Eagle nationallicence Aquila pomarina nationallicence Territorial behaviour nationallicence Home range nationallicence GPS satellite telemetry nationallicence DNA microsatellite analysis nationallicence Meyburg Bernd-Ulrich World Working Group on Birds of Prey (WWGBP), Wangenheimstr. 32, 14193, Berlin, Germany aut Meyburg Christiane World Working Group on Birds of Prey (WWGBP), 31 Avenue du Maine, 75015, Paris, France aut Franck-Neumann Florian Laboratoire de recherche et d'identification génétique CODGENE, Rue Geiler de Kaysersberg, 67400, Illkirch Cedex, France aut Journal of Ornithology Springer-Verlag 148/2(2007-04-01), 157-166 0021-8375 148:2<157 2007 148 10336 https://doi.org/10.1007/s10336-006-0113-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10336-006-0113-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Meyburg Bernd-Ulrich World Working Group on Birds of Prey (WWGBP), Wangenheimstr. 32, 14193, Berlin, Germany aut NATIONALLICENCE 700 1- Meyburg Christiane World Working Group on Birds of Prey (WWGBP), 31 Avenue du Maine, 75015, Paris, France aut NATIONALLICENCE 700 1- Franck-Neumann Florian Laboratoire de recherche et d'identification génétique CODGENE, Rue Geiler de Kaysersberg, 67400, Illkirch Cedex, France aut NATIONALLICENCE 773 0- Journal of Ornithology Springer-Verlag 148/2(2007-04-01), 157-166 0021-8375 148:2<157 2007 148 10336 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer