(A) Proportion of USV produced based on structural complexity (GLM, Complexity*Sex: F
5,72 = 4.10, P = 0.0205). (B) Proportion of simple call types produced in each of the 8 major categories (FT = Flats, 1-FJ = one frequency jump, multi-FJ = two or more frequency jumps) (GLM, Call type*Sex: F
15,192 = 1.54, P = 0.156). (C) Proportion of simple call types produced merged into 5 major categories. The category Wavy merged the waves, humps and chevrons and the category Frequency Jumps (F. Jumps) merged 1-FJ and multi-FJ types from previous categorization based on 8 categories (GLM, Call type*Sex: F
9,120 = 2.04, P = 0.0925). (D) Proportion of USV produced based on different levels of deterministic chaos (L = lineal, DC1 = deterministic chaos 1, DC2 = deterministic chaos 2, DC3 = deterministic chaos 3) (GLM, DC*Sex: F
7,96 = 4.11, P = 0.0087). (E) Proportion of USV produced based on the presence or absence of frequency jumps (FJ), (GLM, Sex*FJ: F
3,48 = 3.62, P = 0.0007). *P ≤ 0.05, **P ≤ 0.01.