MENG, A; PARKIN, D T. Alloparental behaviour in Mute Swans Cygnus olor detected by DNA fingerprinting. Wildfowl, [S. l.], p. 310–318, 2013. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154967. Acesso em: 17 dec. 2025.