Within-male variations in dominant frequency in several anurans.

DF: dominant frequency; cc: consecutive calls
a: call mid-frequency instead of DF
b: weighted average on several values given for different years or different populations
c: fundamental frequency instead of DF
d: mean fundamental frequency on frequency modulated long calls
e: within the same record
f: between different records from different nights
md: median instead of mean
g: between different records
h: about 20 calls/bout; DF determined by averaging spectral properties over a complete bout
i: 3 calls at the start, 3 at the middle and 3 at the end of the bout, on 3 bouts from the start, the middle and the end of the record
Within-male variations in dominant frequency in several anurans.