Fig. 6From: Individuality embedded in the isolation calls of captive beluga whales (Delphinapterus leucas)Power spectra of PS1 calls from five belugas (n = 16). Individual identities are represented at the lower left. The power spectra were calculated from the middle pulse location within PS1 calls. Sixteen samples each from T, G, N, and M were randomly selected to agree with the number of depicted IPI contours of H from which the smallest samples were collectedBack to article page