Hario, M. and Rudbäck, E. (1996) “High frequency of chick diseases in nominate Lesser Black-backed Gull Larus f. fuscus from the Gulf of Finland”, Ornis Fennica, 73(2), pp. 69–77. Available at: https://ornisfennica.journal.fi/article/view/133439 (Accessed: 22November2024).