Figure 1.
Spectrographic representation of great tit song.
This figure shows a complete strophe of a two notes song type, indicating what constitutes a phrase and a note.
Figure 2.
Mean repertoire size ± SE during: a) playback experiment, black bars: first dawn chorus, striped bars: second dawn chorus; grey bars: accumulated repertoire (repertoire size at first dawn chorus + new song types during second dawn chorus); and b) longitudinal analysis in two consecutive years (2008, 2009) and accumulated repertoire (repertoire size 2008 + new song types in 2009).
Figure 3.
Number of individuals in relation to similarity in repertoire composition between the first and second dawn chorus recorded in a) the playback experiment: black bars: own song group, N = 9; striped bars: unfamiliar song group.
N = 9; b) the longitudinal analysis, N = 30.