Call-based species recognition in black-capped chickadees

Isabelle Charrier (1, 2) , Christopher B. Sturdy (1)

1 University of Alberta
2 NAMC - Neurobiologie de l'apprentissage, de la mémoire et de la communication

Species recognition is essential for efficient communication between conspecifics. For this to occur, species information must be unambiguously encoded in the repertoire of each species' vocalizations. Until now, the study of species recognition in songbirds has been focused mainly on male songs and male territorial behaviour. Species recognition of other learned vocalizations, such as calls, have not been explored, and could prove useful as calls are used in a wider range of contexts. Here, we present an experimental field study investigating the coding of species information in a learned vocalization, the 'chick-a-dee' call of the black-capped chickadee (Poecile atricapillus). By modifying natural calls in both temporal and spectral domains and by observing the vocal responses of black-capped chickadees following the playback of these modified calls, we demonstrate that species recognition in chickadees relies on several acoustic features including syntax, frequency modulation, amplitude modulation, and to a lesser extent, call rhythmicity and frequency range.

Domaines: Neurobiologie; Psychologie et comportements; Sciences cognitives

Isabelle Charrier, Christopher B. Sturdy. Call-based species recognition in black-capped chickadees. Behavioural Processes, 2005, 70 (3), pp.271-281. ⟨10.1016/j.beproc.2005.07.007⟩. ⟨hal-02556823⟩