DEAN, W.R.J.; BARNARD, P.; ANDERSON, M.D. When to stay, when to go: trade-offs for southern African arid-zone birds in times of drought. South African Journal of Science, [S. l.], v. 105, n. 1/2, 2009. Disponível em: https://sajs.co.za/article/view/10334. Acesso em: 17 may. 2024.