Projektnummer

0052507

Zusammenfassung

Intra-specific variation in signalling traits offers an elegant opportunity for investigating and understanding selection and adaptation in nature. Most research has interpreted signal evolution in relation to condition or quality of the bearer, whereas alternative explanations, in particular identity signalling, have largely been neglected. Here it is planned to investigate the role of identity signalling in begging calls of chicks in colonially breeding Weavers. Chicks' vocalizations communicate information relevant for both offspring recognition and indication of body condition ther...