BOWLER, John. Factors influencing Whooper Swan Cygnus cygnus numbers on the Isle of Tiree, Argyll, Scotland. Wildfowl, [S. l.], p. 58–71, 2021. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/153425. Acesso em: 13 feb. 2026.