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Article
Mateusz Ledwon, Auteur ; Jacek Betleja, Auteur ; Grzegorz Neubauer, AuteurCapsule In the Whiskered Tern Chlidonias hybrida, hatching success was similar at nests where both parents were caught during the same trapping session and nests where parents were caught on different days. Trapping both mates during the same se[...]
Article
Mateusz Ledwon, Auteur ; Jacek Betleja, Auteur ; Grzegorz Neubauer, AuteurA method for trapping both parents of Whiskered Terns (Chlidonias hybrida), a semi-precocial species, using enclosures that allow access to the chicks until they fledge is described. The approach combines the gradual installation of enclosures w[...]
Article
Mateusz Ledwon, Auteur ; Jacek Betleja, AuteurThe migratory strategy of herons is poorly understood: only that of Purple Heron has been well studied. The migratory movements of three Night Herons from the Upper Vistula Valley (Poland) were studied using a GPS/GSM-tracking system in 2012. Th[...]
Article
Mateusz Ledwon, Auteur ; Grzegorz Neubauer, Auteur ; Jacek Betleja, AuteurWe present the first-ever survival estimates of the Whiskered Tern Chlidonias hybrida, based on the analysis of capture-recapture data (403 adults and 1,484 chicks ringed) collected between 1993 and 2011 in an increasing breeding population in s[...]
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
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
Marcin Przymencki, Auteur ; Klaudia Litwiniak, Auteur ; Peter Adriaens, Auteur ; Natalia Atamas, Auteur ; Lou Bertalan, Auteur ; Jacek Betleja, Auteur ; Arunas Cerkauskas, Auteur ; Philippe J. Dubois, Auteur ; Thijs Horst, Auteur ; Miroslav Jelinek, Auteur ; Albert de Jong, Auteur ; Dusan Karaska, Auteur ; Ronald Klein, Auteur ; Mars Muusse, Auteur ; Strahil Peev, Auteur ; Alexander Pyshko, Auteur ; Irina Samusenko, Auteur ; Edgars Smislovs, Auteur ; Hendrik Trapp, Auteur ; Jakob Vratny, AuteurLitwiniak et al. (2021) detailed the breeding-range expansion of the Caspian Gull Larus cachinnans in Europe. The paper concluded by saying that:I-he Caspian Gull is an easy-to-study bird, and we can continue to follow its expansion in Europe in[...]
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[...]
Article
Monika Zielinska, Auteur ; Piotr Zieliński, Auteur ; Pawel Kolodziejczyk, Auteur ; Pawel Szewczyk, Auteur ; Jacek Betleja, AuteurSince 1981, when the first breeding pair of Mediterranean Gull Larus melanocephalus was recorded in Poland, the population of this gull has increased considerably. Its population size was stable until 1997, not exceeding ten pairs annually; ther[...]
Article
Marcin Faber, Auteur ; Jacek Betleja, Auteur ; Robert Gwiazda, Auteur ; Pawel Malczyk, Auteur
Article
Grzegorz Neubauer, Auteur ; Magdalena Zagalska-Neubauer, Auteur ; Jacek Betleja, Auteur
Article
Mateusz Ledwon, Auteur ; Jacek Betleja, Auteur ; Tadeusz Stawarczyk, Auteur ; Grzegorz Neubauer, AuteurThe Whiskered Tern population in Poland has rapidly increased from 40 breeding pairs in 1990 to over 1,600 in 2007, with strongest local population in the Upper Vistula River Valley. Owing to rather low pre-breeding and adult apparent survival r[...]
