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Article
Robert Gwiazda, AuteurBird colonies can provide better protection against predators for other bird species, although negative interspecies interactions are possible. The presence of colonies of small gulls (Laridae) and marsh terns Chlidonias spp. is important for br[...]
Article
Robert Gwiazda, Auteur ; Adam Flis, Auteur
Article
Marcin Matysek, Auteur ; Robert Gwiazda, Auteur ; Tomasz Figarski, Auteur ; Filip Zieba, Auteur ; Maciej Klimecki, Auteur ; Radosław Mateja, Auteur ; Piotr Krzan, Auteur ; Grzegorz Piątek, AuteurCapsule Predation risk of artificial nests resembling Hazel Grouse Tetrastes bonasia nests was reduced in more diverse habitats and when roads and trails were closer.Aims To determine the importance of habitat structure and the presence of roads[...]
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Adam Flis, Auteur ; Robert Gwiazda, Auteur ; Wojciech Krztoń, AuteurWe present preliminary results on the sexual differences in Little Bittern Ixobrychus m. minutus parental activities during the pre-hatching and post-hatching phases. Both sexes were engaged in all nest attendance activities, but not in equal pr[...]
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Marcin Matysek, Auteur ; Robert Gwiazda, Auteur ; Filip Zieba, Auteur ; Maciej Klimecki, Auteur ; Radoslaw Mateja, Auteur ; Piotr Krzan, AuteurHuman presence can significantly reduce habitat availability for wildlife. We investigated the impact of the distance from hiking trails and number of tourists on the number of sites occupied by Hazel Grouse (Tetrastes bonasia) and on the predat[...]
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Adam Flis, Auteur ; Robert Gwiazda, AuteurCapsule: The diet and feeding of nestling Little Bitterns Ixobrychus minutus was studied using trail cameras. Little Bitterns nestlings were mostly provisioned with amphibians and small fish. They were fed in the morning and evening, but not dur[...]
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Marcin Matysek, Auteur ; Robert Gwiazda, Auteur ; Zbigniew Bonczar, AuteurWe studied the differences between spring and winter sites of Hazel Grouse Tetrastes bonasia in a managed, temperate forest in the Beskid Mountains (Western Carpathians, Poland). The study of seasonal requirements of this species in this type of[...]
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Robert Gwiazda, Auteur ; Mateusz Ledwon, AuteurWe studied sex-specific differences in prey returned to nests and eaten by parents in Whiskered Terns Chlidonias hybrida. The species is size-dimorphic, with females being smaller than males. The sex of the birds was determined by molecular anal[...]
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Grzegorz Neubauer, Auteur ; Magdalena Zagalska-Neubauer, Auteur ; Robert Gwiazda, Auteur ; Marcin Faber, Auteur ; Dariusz Bukacinski, Auteur ; Jacek Betleja, Auteur ; Przernyslaw Chylarecki, AuteurThe current Situation of three species of large gulls (L. argentatus, L cachinnans and L. michahellis) in Poland is presented based on results of own studies and published data. Herring Gulls started to breed in the country in the late 1960s and[...]
Article
Grzegorz Neubauer, Auteur ; Magdalena Zagalska-Neubauer, Auteur ; Robert Gwiazda, Auteur ; Marcin Faber, Auteur ; Dariusz Bukacinski, Auteur ; Jacek Betleja, Auteur ; Przernyslaw Chylarecki, AuteurThe current Situation of three species of large gulls (L. argentatus, L cachinnans and L. michahellis) in Poland is presented based on results of own studies and published data. Herring Gulls started to breed in the country in the late 1960s and[...]
Article
Robert Gwiazda, Auteur ; Dariusz Bukacinski, Auteur ; Grzegorz Neubauer, Auteur ; Marcin Faber, Auteur ; Jacek Betleja, Auteur ; Magdalena Zagalska-Neubauer, Auteur ; Monika Bukacinska, Auteur ; Przemyslaw Chylarecki, AuteurThe food composition in breeding colonies of large gulls (mainly Caspian Gull Larus cachinnans) was investigated at three sites representing recently-colonized inland habitats in Poland: a gravel pit, an unregulated river and a reservoir. No dif[...]
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Marcin Faber, Auteur ; Jacek Betleja, Auteur ; Robert Gwiazda, Auteur ; Pawel Malczyk, Auteur
Article
Robert Gwiazda, Auteur ; Mateusz Ledwon, AuteurSexual size dimorphism is common in many bird species. It can lead to sex-specific differences in foraging ability. The Whiskered Tern (Chlidonias hybrida) exhibits sexual size dimorphism. Sex-specific differences in the foraging behaviour of Wh[...]
