Fig. 2

Sonograms of four different territorial calls (left box) and one alarm call (right box) of various taxa. a Thick blue boxes illustrate the division of a motif into three equal time sections for analytical purposes with recording XC292445 [concinna]. Territorial call sonogram of b XC115283 [maria]; c RH3 [vigorsii, 2 note variant]; d XC417506 [vigorsii 3 note variant]. e Sonogram of alarm call of AV19281 [elegans]. Note that alarm calls across all taxa are similar. Accession numbers refer to specific recordings as listed in Additional file 5: Table S4, S5