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Fig. 4 | Movement Ecology

Fig. 4

From: Soaring migrants flexibly respond to sea-breeze in a migratory bottleneck: using first derivatives to identify behavioural adjustments over time

Fig. 4

Cubic splines of the Generalized Additive Mixed Models with 95% C.I. (A–E) and their first derivative estimations and 95% simultaneous confidence intervals (F–L). Panels A–E: Estimated non-linear change of wind component and bird speeds (yaxis) as function of time (x-axis). Coloured sections indicate a significant rate of change that either increased (red) or decreased (blue) in that specific time period. The colouring of portions of the GAMM smoother line was adopted after calculating the first derivatives. The dashed lines delimitate the period of stronger crosswind component of the wind. Panels F–L: when the rate of change f’(x) in the y-axis is significantly above or below 0, the estimated rate of change is highlighted in blue (decrease) or red (increase)

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Movement Ecology

ISSN: 2051-3933