KÄLLANDER, H. Food caching in the European Nuthatch Sitta europaea. Ornis Svecica, Lund, Sweden, v. 3, n. 2, p. 49–58, 1993. DOI: 10.34080/os.v3.23043. Disponível em: https://journals.lub.lu.se/os/article/view/23043. Acesso em: 29 nov. 2022.