caa a22 4500 463176146 CHVBK 20180406164826.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10336-007-0167-8 doi (NATIONALLICENCE)springer-10.1007/s10336-007-0167-8 Expansion of the Mediterranean Gull Larus melanocephalus in Poland [Elektronische Daten] [Monika Zielińska, Piotr Zieliński, Paweł Kołodziejczyk, Paweł Szewczyk, Jacek Betleja] Since 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; thereafter, an increasing number of sightings were made, and during the last 5years between 26 and 39 breeding pairs have been recorded in Poland. To date, breeding sites have been established in a total of 45 sites (maximum of 19 sites in a given year), with 27% of these (43% of all broods) found on islands located in the middle course of the Vistula River. Breeding sites have also included artificial reservoirs, such as dam reservoirs (20% of sites, 19% of broods), gravel pits (9% of sites, 13% of broods) and fishponds (24% of places, 8% of broods). Mediterranean Gulls were found to nest only within the colonies of other Laridae. Single pairs were recorded at 40% of the breeding sites, whereas a maximum of two to five pairs were recorded at 47% of the other sites. The great majority of breeding attempts were recorded in Black-headed Gull L. ridibundus colonies. In two cases, Mediterranean Gulls bred within mono-specific colonies of Common Gulls L. canus consisting of 60-150 pairs. The biggest concentrations of breeding sites were along the middle course of the Vistula river and in the southern part of Poland. Dt. Ornithologen-Gesellschaft e.V., 2007 Distribution nationallicence Habitat selection nationallicence Larus melanocephalus nationallicence Mediterranean Gull nationallicence Population dynamics nationallicence Zielińska Monika Institute for Ornithology, Polish Academy of Sciences, ul. Nadwiślańska 108, 80-680, Gdańsk 40, Poland aut Zieliński Piotr Institute for Ornithology, Polish Academy of Sciences, ul. Nadwiślańska 108, 80-680, Gdańsk 40, Poland aut Kołodziejczyk Paweł ul. Lotnicza 139/49, 54-132, Wrocław, Poland aut Szewczyk Paweł ul. Mieszka I 12, 23-210, Kraśnik, Poland aut Betleja Jacek Department of Natural History, Upper Silesian Museum, Plac Jana III Sobieskiego 2, 41-902, Bytom, Poland aut Journal of Ornithology Springer-Verlag 148/4(2007-10-01), 543-548 0021-8375 148:4<543 2007 148 10336 https://doi.org/10.1007/s10336-007-0167-8 text/html Onlinezugriff via DOI 1 editorial jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10336-007-0167-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zielińska Monika Institute for Ornithology, Polish Academy of Sciences, ul. Nadwiślańska 108, 80-680, Gdańsk 40, Poland aut NATIONALLICENCE 700 1- Zieliński Piotr Institute for Ornithology, Polish Academy of Sciences, ul. Nadwiślańska 108, 80-680, Gdańsk 40, Poland aut NATIONALLICENCE 700 1- Kołodziejczyk Paweł ul. Lotnicza 139/49, 54-132, Wrocław, Poland aut NATIONALLICENCE 700 1- Szewczyk Paweł ul. Mieszka I 12, 23-210, Kraśnik, Poland aut NATIONALLICENCE 700 1- Betleja Jacek Department of Natural History, Upper Silesian Museum, Plac Jana III Sobieskiego 2, 41-902, Bytom, Poland aut NATIONALLICENCE 773 0- Journal of Ornithology Springer-Verlag 148/4(2007-10-01), 543-548 0021-8375 148:4<543 2007 148 10336 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer