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jane12147-sup-0001-FigS1-S7-Suppinfo.docxWord document3995K

Fig. S1. (A) The pdf of a wrapped Cauchy distribution (red) with a concentration parameter of ρ = 0·9 and of an uniform distribution (green) are plotted as a function of turning angle α. θ indicates the angular threshold. (B) The reorientation (red) occurs when α > θ.

Fig. S2. We display two simulations obtained with μ = 1·4, ρ = 0·70 (left), and ρ = 0·95 (right). The black point represent the origin of simulation.

Fig. S3. (A) The bias of inline image is plotted as a function of the assigned ρ values. (B) The bias of inline image is plotted as a function of the assigned ρ values. (C) The bias of inline image is plotted as a function of the assigned μ values. (D) The bias of the recovered inline image is plotted as a function of the assigned ρ values. Vertical bars represent standard errors.

Fig. S4. The fraction of successful identifications of reorientation angles is shown for (A) ρ and (B) μ values.

Fig. S5. The recovered μ values are reported as a function of the assigned μ values.

Fig. S6. In blue we represent the recorded trajectory; in red we connect the point where we identify a reorientation event with a straight line. We reported bird identification. The subfix _L and _T indicate the colony (Linosa and Tremiti, respectively), the subfix _i and _c the phase of the breeding period (incubation and chick-rearing, respectively).

Fig. S7. Model fitting. Bird identification. The subfix _L and _T indicate the colony (Linosa and Tremiti, respectively), the subfix _i and _c the phase of the breeding period (incubation and chick-rearing, respectively).

jane12147-sup-0001-Supportinginformation.docxWord document3995K 

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