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1

Mewa srebrzysta w mieście

100%
Przymencki M., Litwiniak K.
Ptaki Polski
|
2019
|
nr 1[51]
2
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Zagęszczenie i wybrane aspekty ekologii rozrodu mewy srebrzystej Larus argentatus na osiedlu Żabianka w Gdańsku

100%
Litwiniak K., Przymencki M.
Ornis Polonica
|
2022
|
tom 63
|
nr 2
The Herring Gull has been breeding in Poland since the early 1970s, and the first broods on roof-tops were found here in 1988. Since then, the vast majority of the population moved to the cities and occupied the roof-tops of buildings. There has been little data from Poland describing the aspects of the breeding biology of this species in an urbanized environment so far. In 2018–2019, we conducted the research to help fill this gap. It took place in the Żabianka estate of Gdańsk city (N Poland). The gulls nested there in loose clusters, and the pair density in both years was 0.43 p/1 ha of the total study area and 3.5 p/1 ha of the potential nesting area. The onset of breeding seasonranged from April 23rd to May 18th. The average clutch volume was 246.6 cm3 , and the relative volume of the C-egg was 0.9 in both years of the study. Such a large asymmetry in the size of eggs in the clutch can lead to a reduced reproductive success of the population. 2.44 chicks hatched in the nests per breeding pair.
3
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Śródmiejska kolonia czapli siwej Ardea cinerea we Wrocławiu

81%
Przymencki M., Litwiniak K., Celinski D.
Ornis Polonica
|
2019
|
tom 60
|
nr 3
4
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The first records of roof-top nesting by Caspian Gulls Larus cachinnans in Poland with reference to other cases in Europe

81%
Rapczynski J., Litwiniak K., Przymencki M.
Ornis Polonica
|
2021
|
tom 62
|
nr 3
5
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Ekologia rozrodu i liczebność mewy białogłowej Larus cachinnans na Zbiorniku Mietkowskim w latach 2019–2020

81%
Przymencki M., Litwiniak K., Zagalska-Neubauer M., Neubauer G.
Ornis Polonica
|
2021
|
tom 62
|
nr 3
6
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Current distribution, abundance and trends of the Caspian Gull Larus cachinnans in Poland

42%
Przymencki M., Litwiniak K., Betleja J., Neubauer G., Ledwon M., Bednarz L., Szymczak J., Sidelnik M., Grochowski P., Pomorska-Grochowska J., Kołodziejczyk P., Pietrasik J., Stawarczyk J.
Ornis Polonica
|
2022
|
tom 63
|
nr 1
Caspian Gull Larus cachinnans started to nest in Poland in the early 1980s. Since 1989 this species has started to nest regularly, but no complete survey of breeding population has been done so far. To describe abundance trend, we collected data on numbers and distribution of breeding Caspian Gulls until 2020 from the whole country. The census in 2021 allowed to estimate complete or near-complete breeding population at 5,554 pairs nesting in 44 places in total. Nesting sites held from 1 to 1,924 breeding pairs. About 91% of pairs bred in 9 colonies with more than 100 pairs. There were 21 nesting sites with ≤10 pairs, including 10 single-pair sites. 66% of the sites were located in southern part of the country, but increasingly more pairs started to settle in new places, including central Poland. The average annual population growth rate in 1989–2021 was estimated at 14.8% (95% confidence intervals: 12.3–17.3%); the Caspian Gull is characterized by the strongest increase among all breeding bird species in Poland. We predict that the abundance of Caspian Gulls in Poland will further increase, as many potentially suitable breeding areas are not yet colonized, particularly in the northern and western part of the country. This spectacular increase is also probably linked to multiple factors, including availability of landfills as important foraging places, which may affect high productivity and survival. The case of the Caspian Gull population increase is a good example of large-scale changes in bird populations in the period of Anthropocene in Europe.
7
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Ocena możliwości włączenia Lasów Sobiborskich do sieci obszarów Important Birds Areas oraz obszarów specjalnej ochrony ptaków

32%
Kanclerska K., Karpinska O., Wozniak B., Grzebkowski M., Aftyka S., Belcik M., Bozycki L., Celej M., Chodkiewicz T., Kuszner M., Litwiniak K., Pawelec M., Pietrasz K., Rozycki A. L., Sikora D., Smith L., Stasiak K., Szewczuk W., Sliwinski S., Tylkowski S., Wozniak M., Wozniak P., Wojciak J., Zoladek K., Keller M.
Sylwan
|
2018
|
tom 162
|
nr 02
One of the greatest challenges of nature conservation is to identify and locate networks of pro tected areas, which will preserve the biodiversity. The paper aims to show the ornithological value of the Sobibór Forests (E Poland) and to emphasize the fact that the network of Important Bird Areas (IBA) and Special Protection Areas within Natura 2000 (SPA) may require additions. The study was conducted in the period of 2008−2016, mainly on forested areas occupying 256 km². The Sobibór Forests are characterized by a large diversity of habitats, but are mainly covered by Scots pine Pinus sylvestris. High diversity of wetlands and marshlands make the Sobibór Forest unique within the country. Three methodologies were used to estimate population size of chosen species: sampling, census and random observations. 31 species from Annex I of the Birds Directive plus 25 species of SPEC or non−SPECE category were observed which allows to consider this area as one of the most valuable for avifauna in Poland. Six breeding species classify the Sobibór Forests as the IBA and SPA. These species include Black Stork Ciconia nigra (8−13 breeding pairs), Common Crane Grus grus (80−120 breeding pairs), Grey Great Owl Strix nebulosa (0−7 breeding pairs i.e. 50−100% of Polish breeding population), Eagle Owl Bubo bubo (6 breeding pairs), White−backed Woodpecker Dendrocopos leucotos (40−70 breeding pairs) and Grey−headed Woodpecker Picus canus (20−40 breeding pairs). Six other species show potential for qualification, but not enough data has been collected yet. The list of this specie includes: Short−toed Snake Eagle Circaetus gallicus, Common Snipe Gallinago gallinago, Stock Dove Columba oenas, European Nightjar Caprimulgus europaeus, Collared Flycatcher Ficedula albicollis and Bluethroat Luscinia svecica. The Sobibór Forests occupy a small area compared to other IBA forests. However, the number of breeding species classifies the surveyed area as 7th among other IBAs. Moreover all eligible species may be considered as a bioindicators of the natural state of the forest. This is proof of the high natural value of this area.
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