A New Owl Species of the Genus Otus (Aves: Strigidae) from Lombok, Indonesia
Figure 4
Principal Component Analysis scatterplot of acoustic variables.
Depicted are the Eigenvectors of the first and second principal components of 15 acoustic variables measured for territorial songs of O. jolandae and five acoustically similar species: O. rufescens, O. cnephaeus, O. lempiji, O. collari and O. m. manadensis (N = 58).