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Article
Grzegorz Maciorowski, Auteur ; Jan Maciorowski, Auteur ; Piotr Tryjanowski, Auteur ; Artur Golawski, Auteur ; Michał Polakowski, AuteurRe-nesting within the same breeding season after clutch loss is very rarely observed in large raptors, including the endangered greater Spotted Eagle (Clanga clanga). Here, we describe the first well-documented and confirmed case of clutch repla[...]Nouveauté
Article
Paweł Mirski, Auteur ; Zdzisław Cenian, Auteur ; Mindaugas Dagys, Auteur ; Szilárd Daróczi, Auteur ; Deivis Dementavičius, Auteur ; Grzegorz Maciorowski, Auteur ; Sebastian Menderski, Auteur ; Damian Nowak, Auteur ; Ádám Pongrácz, Auteur ; Mátyás Prommer, Auteur ; Urmas Sellis, Auteur ; Joachim Siekiera, Auteur ; Péter Szinai, Auteur ; Tomasz Tumiel, Auteur ; Janusz Wójciak, Auteur ; Robert Zeitz, Auteur ; Ülo Väli, AuteurDans Ibis (163(2) 2021)Animal home-ranges are expressions of the biology and ecology of a species, and their size is often considered to be a proxy for habitat quality. Understanding the factors affecting variation in home-range size may aid prediction of the impact o[...]
Article
Grzegorz Maciorowski, Auteur ; Antonia Galanaki, Auteur ; Theodoros Kominos, Auteur ; Michalis Dretakis, Auteur ; Paweł Mirski, AuteurThe Greater Spotted Eagle is an extremely rare species which is strongly associated with wetlands during the breeding period. The winter habitats of this vulnerable species have not been extensively studied so far, although eagles spend over one[...]
Article
Grzegorz Maciorowski, Auteur ; Paweł Mirski, Auteur ; Ignacy Kardel, Auteur ; Mateusz Stelmaszczyk, Auteur ; Dorota Mirosław-Swia˛tek, Auteur ; Jarosław Chorman´ski, Auteur ; Tomasz Okruszko, AuteurCapsule Foraging sites of Aquila clanga compared to Aquila pomarina are characterized by a considerably longer duration of flooding within the year and higher mean and maximum depths of flooding. A. clanga is particularly associated with shallow[...]
Article
Grzegorz Maciorowski, Auteur ; Pawel Mirski, AuteurWetlands in the Biebrza Valley, north-east Poland, are inhabited by two closely related Aquila species: the more numerous Lesser Spotted Eagle A. pomarina prefers human-transformed landscapes, whereas the very rare Greater Spotted Eagle A. clang[...]
Article
Jan Lontkowski, Auteur ; Grzegorz Maciorowski, AuteurSpotted Eagle A pomarina (hereafter pomarina) is a well-studied and often difficult issue. Several good papers on identification of spotted eagles have been published. Their field characters are rather well known and especially birds in juvenile[...]
Article
Grzegorz Maciorowski, Auteur ; Antonia Galanaki, Auteur ; Theodoros Kominos, Auteur ; Michalis Dretakis, Auteur ; Pawel Mirski, AuteurThe Greater Spotted Eagle is an extremely rare species which is strongly associated with wetlands during the breeding period. The winter habitats of this vulnerable species have not been extensively studied so far, although eagles spend over one[...]
Article
Ülo Väli, Auteur ; Pauli Saag, Auteur ; Valery Dombrovski, Auteur ; Bernd-Ulrich Meyburg, Auteur ; Grzegorz Maciorowski, Auteur ; Tadeusz Mizera, Auteur ; Rimgaudas Treinys, Auteur ; Sofie Fagerberg, AuteurThe correct identification of hybrids is essential in avian hybridisation studies, but selection of the appropriate set of genetic markers for this purpose is at times complicated. Microsatellites and single nucleotide polymorphisms (SNPs) are c[...]
