Fig. 2.

Contour plot of log_e-transformed, averaged normalized periodogram values (power) from 100 simulated movement trajectories consisting of daily bimodal behavior. The daily behavioral sequence is given by the movement mode set S_K = {m₂, m₃} with the values of m_i as defined in Methods: Stochastic movement model. The expected time spent in mode 2 was varied among {0, 1, …, 12} to span a movement complexity of no behavioral switching (τ₂ = 0, i.e., a random walk), to evenly partitioned switching (τ₂ = τ₁ = 12 hours, i.e., symmetric bimodal behavior). For each ratio we simulated 100 continuous movement paths and sampled locations each hour for 30 days. Lines are contoured at the levels of log_e(1) = 0 and enclose regions of frequencies with power larger than that expected by white noise. S_K is the number of distinct movement modes; m₂ is movement mode 2, and m₃ is movement mode 3, as defined in Methods: Stochastic movement models; τ₁ and τ₂ are expected temporal durations for m₁ and m₂, respectively. Grayscale units are in power per cycle per velocity sample, where power is the periodogram value.