Rodríguez-Gironés, Miguel A.; Zúñiga, Jesús Martín; … - In: Behavioral Ecology 13 (2002) 6, pp. 782-785
The offspring of birds and mammals use a combination of movements and vocalizations, known as begging, to solicit food from their parents. A widespread interpretation of begging is that it constitutes an honest signal of offspring need. But we know that in the house sparrow (Passer domesticus)...