Table 1.

Significant hearing sensitivity and behavioural correlations recovered in this study.

dependent/independent variable	Fd.f.	adjusted R2	β	significance
mean hearing/ECD length	8.524,19	0.567	0.871	0.000
hearing range/ECD length	8.124,19	0.553	0.848	0.000
ECD length/multiple phrase	7.089,49	0.485	0.305	0.012
ECD length/pair bonding	7.089,49	0.485	0.291	0.005
ECD length/<20 in group	7.089,49	0.485	0.366	0.013
ECD length/>20 in group	7.089,49	0.485	0.465	0.001
ECD length/aquatic environments	7.089,49	0.485	−0.377	0.009
ECD rostrocaudal width/aquatic environments	2.839,49	0.222	−0.370	0.036