NORRISS, D W; WILSON, H J. Disturbance and flock size changes in Greenland Whitefronted Geese wintering in Ireland. Wildfowl, [S. l.], v. 39, p. 63–70, 1988. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154734. Acesso em: 5 apr. 2026.