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Table 7 Discriminant function analysis (DFA) of calls a1–a8. Eigenvalues, percent variance, and standardized canonical discriminant function coefficients of functions and parameters

From: A small vocal repertoire during the breeding season expresses complex behavioral motivations and individual signature in the common coot

Functions Eigenvalue Percent variance
(%)
Peak frequency (PF, Hz) Fundamental frequency (F0, Hz) Maximum frequency of F0 (F0max, Hz) Minimum frequency of F0 (F0min, Hz) Duration of syllable (T, s) Interval of syllables (TI, s)
Function 1 5.225 63.7 0.229 −0.436 0.916 −0.711 − 0.608 0.903
Function 2 2.242 27.4 0.554 −0.548 0.938 0.149 0.421 0.017
Function 3 0.632 7.7 0.460 0.906 −0.212 −0.538 −0.003 − 0.168
Function 4 0.088 1.1 −0.376 0.595 −0.180 0.617 −0.164 0.179
Function 5 0.008 0.1 0.593 0.167 −0.787 0.417 0.244 0.469
Function 6 0.002 0.0 −0.312 0.901 0.134 −0.719 0.803 0.397