1.
Meissner W, Ciopcińska K. Behaviour of Mute Swans Cygnus olor wintering at a municipal beach in Gdynia, Poland. Ornis Svec [Internet]. 2007 Oct. 1 [cited 2022 Dec. 10];17(3–4):148-53. Available from: https://journals.lub.lu.se/os/article/view/22685