DALE, Svein; EKEBOM, Agneta; DAHL, Åslög. Breeding population size, migration, and wintering of the Eurasian Siskin Spinus spinus in relation to seed crop sizes of food trees. Ornis Svecica, Lund, Sweden, v. 35, p. 26–41, 2025. DOI: 10.34080/os.v35.26266. Disponível em: https://journals.lub.lu.se/os/article/view/26266. Acesso em: 8 dec. 2025.