Figure 2 | Scientific Reports

Figure 2

From: Unlearned adaptive responses to heterospecific referential alarm calls in two bird species from separate evolutionary lineages

Figure 2

Acoustic properties of the ‘L’ syllables in Oriental tit responses to different predators. Boxplots and raincloud plots display varimax-rotated principal components for ‘L’ phrases of the Oriental tit, comparing snake vs. jay (A,B), and snake vs. cat (C,D) responses. The principal components are grouped into those representing duration properties (A,C) and those representing frequency properties (B,D). The proportion of variance explained by these components vary from 17 to 24% (details in Supplementary Tables S1, S2). The dotted area in the raincloud plots indicates overlapping areas between frequency distributions of values between treatments, and the linear overlap of the bases of these distributions illustrates the ranges of values that overlap between treatments. Please note that these plots do not account for the random effect of nest ID included in the statistical analysis. For a comprehensive overview of the statistical analysis results, please refer to Supplementary Tables S1 and S2. Additionally, Supplementary Fig. S2 presents boxplots depicting the original duration and frequency variables contributing to the principal components.

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