Analysis of information sources in references of the Wikipedia article "Vocal learning" in English language version.
Comparative studies indicate that whistles vary in structure across populations and species (Steiner 1981; Ding et al. 1995; Rendell et al. 1999), with whistle divergence perhaps facilitating species recognition and speciation (Podos et al. 2002).
Comparative studies indicate that whistles vary in structure across populations and species (Steiner 1981; Ding et al. 1995; Rendell et al. 1999), with whistle divergence perhaps facilitating species recognition and speciation (Podos et al. 2002).
Comparative studies indicate that whistles vary in structure across populations and species (Steiner 1981; Ding et al. 1995; Rendell et al. 1999), with whistle divergence perhaps facilitating species recognition and speciation (Podos et al. 2002).