Tomasz Chodkiewicz, Szymon Beuch, Łukasz Ławicki, Przemysław Wylegała, Jacek Betleja, Szymon Bzoma, Zdzisław Cenian, Robert Cymbała, Paweł Czechowski, Stanisław Czyż, Piotr Dębowski, Andrzej Dylik, Andrzej Górski, Grzegorz Grygoruk, Wojciech Guzik, Fatima Hayatli, Krzysztof Jankowski, Zbigniew Kajzer, Dominik Krupiński, Dorota Łukasik, Łukasz Matyjasiak, Grzegorz Neubauer, Sławomir Sielicki, Bartosz Smyk, Krzysztof Stasiak, Łukasz Wardecki, Marcin Wężyk, Maria Wieloch, Bartłomiej Woźniak, Monika Zielińska, Piotr Zieliński, Arkadiusz Sikora
Ornis Polonica 2022, 63: 347–379
https://doi.org/10.12657/ornis.2022.4.4
Abstract: The report presents results of the Rare Birds Panel for breeding species in Poland in 2020. The status of breeding populations of 34 rare taxa (32 species and 2 subspecies) is described, including their abundance, distribution and trends. Variable, species-specific periods for trends assessments are given in the species overview. Record numbers were reported for: the Whooper Swan Cygnus cygnus (226 pairs), Egyptian Goose Alopochen aegyptiaca (32 p.), Great Egret Ardea alba (689 p.), Great Grey Owl Strix nebulosa (16 p.) and Peregrine Falcon Falco peregrinus (56 p.). In addition, increases in abundance were recorded for: the Red-crested Pochard Netta rufina (47 p.), Mandarin Duck Aix galericulata (88 p.) and Black-crowned Night Heron Nycticorax nycticorax (1 274 p.). The declining trend was detected for: the Eurasian Curlew Numenius arquata (176 p.), Great Snipe Gallinago media (450 males), Common Ringed Plover Charadrius hiaticula (217 p.), Mediterranean Gull Ichthyaetus melanocephalus (53 p.), Western Osprey Pandion haliaaetus (25 p.), Short-toed Snake Eagle Circaetus gallicus (4 p.), European Roller Coracias garrulus (16 p.) and Wallcreeper Tichodroma muraria (min. 1 p.). Populations of the Ferruginous Duck Aythya nyroca (121 p.), Greater Spotted Eagle Clanga clanga (14 p.; including 5 pure pairs), Golden Eagle Aquila chrysaetos (34 p.) and Aquatic Warbler Acrocephalus paludicola (3 786 p.) remained stable. Fluctuations or unknown trends in abundance were observed for the Common Shelduck Tadorna tadorna (115 p.), Eurasian Oystercatcher Haematopus ostralegus (36 p.), Citrine Wagtail Motacilla citreola (39 p. outside the Biebrza Valley). Taxa whose abundance did not exceed 10 p. were: the Canada Goose Branta canadensis (1 p.), Black-winged Stilt Himantopus himantopus (3 p.), Pied Avocet Recurvirostra avosetta (7 p.), Sandwich Tern Thalasseus sandvicensis (2 p.), Short-eared Owl Asio flammeus (1 p. ), Homeyer’s Great Grey Shrike Lanius excubitor homeyeri (5 p.), Carrion Crow Corvus corone (7 p.), Greenish Warbler Phylloscopus trochiloides (3 p.) and Grey-headed Wagtail M. flava thunbergi (3 p.). There were no breeding records of the Rose-ringed Parakeet Psittacula krameri and Redwing Turdus iliacus.
Keywords: distribution, numbers, Poland, rare breeding species, regions, report 2020, trends
