Ward, Sally; Lampe, Helene M.; Slater, Peter J. B. - In: Behavioral Ecology 15 (2004) 3, pp. 477-484
Male passerine bird song is a classic example of a sexually selected display. Theory predicts that such displays should be costly, but there are few empirical data on the potential costs of bird song. We measured the rate of oxygen consumption by male pied flycatchers, Ficedula hypoleuca,...