Szymon Beuch, Łukasz Ławicki, Przemysław Wylegała, Arkadiusz Sikora, Jacek Betleja, Szymon Bzoma, Zdzisław Cenian, Robert Cymbała, Paweł Czechowski, Stanisław Czyż, Piotr Dębowski, Andrzej Dylik, Andrzej Górski, Wojciech Guzik, Fatima Hayatli, Krzysztof Jankowski, Zbigniew Kajzer, Łukasz Krajewski, Dorota Łukasik, Łukasz Matyjasiak, Grzegorz Neubauer, Przemysław Obłoza, Sławomir Sielicki, Bartosz Smyk, Krzysztof Stasiak, Łukasz Wardecki, Marcin Wężyk, Maria Wieloch, Bartłomiej Woźniak, Monika Zielińska, Piotr Zieliński, Tomasz Chodkiewicz
Ornis Polonica 2023, 64: 313–351
https://doi.org/10.12657/ornis.2023.4.4
Abstract: The report presents the results of the Rare Birds Panel for breeding species in Poland in 2021. The status of breeding populations of 32 rare taxa (30 species and 2 subspecies) was summarized, including their abundance, distribution and trends. Record high abundance was recorded for: Whooper Swan Cygnus cygnus (308 pairs), Egyptian Goose Alopochen aegyptiaca (36 p.), Eurasian Oystercatcher Haematopus ostralegus (40 p.), Black-winged Stilt Himantopus himantopus (10 p.), Black-crowned Night Heron Nycticorax nycticorax (1315 p.), Great White Egret Ardea alba (845 p.) and Peregrine Falcon Falco peregrinus (68 p.). In addition, increases in abundance were recorded for: Red-crested Pochard Netta rufina (44 p.), Mandarin Duck Aix galericulata (88 p.) and Great Grey Owl Strix nebulosa (11 p.). The declining trend was detected for: Common Ringed Plover Charadrius hiaticula (179 p.), Black-tailed Godwit Limosa limosa (381 p.), Great Snipe Gallinago media (486 males), Mediterranean Gull Ichthyaetus melanocephalus (68 p.), Osprey Pandion haliaetus (30 p.), Short-toed Snake Eagle Circaetus gallicus (4 p.), European Roller Coracias garrulus (16 p.), Wallcreeper Tichodroma muraria (min. 1 p.) and Redwing Turdus iliacus (0–2 p.). Populations of Ferruginous Duck Aythya nyroca (102 p.), Greater Spotted Eagle Clanga clanga (18 p.), Golden Eagle Aquila chrysaetos (30 p.), and Aquatic Warbler Acrocephalus paludicola (4724 p.) remained stable. Fluctuations or unknown trends in abundance were observed for Common Shelduck Tadorna tadorna (118 p.), Eurasian Curlew Numenius arquata (193 p.), Sandwich Tern Thalasseus sandvicensis (77 p.), White-winged Black Tern Chlidonias leucopterus (4127 p.), Citrine Wagtail Motacilla citreola (30 p. outside the Biebrza Valley), and taxa whose abundance did not exceed 10 p.: Pied Avocet Recurvirostra avosetta (2 p.), Homeyer’s Great Grey Shrike Lanius excubitor homeyeri (1 p.), Carrion Crow Corvus corone (4 p.) and Grey-headed Yellow Wagtail M. flava thunbergi (3 p.). There were no breeding records of Canada Goose Branta canadensis, Rose-ringed Parakeet Psittacula krameri, Short-eared Owl Asio flammeus and Greenish Warbler Phylloscopus trochiloides.
Keywords: distribution, numbers, Poland, rare breeding bird species, regions, report 2021, trends
