Martins, Thaís Lima Fernandes - In: Behavioral Ecology 15 (2004) 1, pp. 174-180
Wild and captive zebra finches (Taenopygia guttata), like several other species, produce a male-biased sex ratio at fledging when food is scarce. This is due to primary sex-ratio adjustment and female-biased nestling mortality. Given that young females fledging at low body masses have been shown...