Figure 4

The change in various movement characteristics of vultures as a function of time since the last feeding event (the days within a FDP) during short (1 ≤ FDP ≤ 4 d, white circles; shifted right for clarity) and long (FDP ≥ 6, black boxes) sequences. Long grey lines represent the best fitting model for the subset of long FDP sequences (see caption of Figure 3 for further details). Short thick lines represent linear regression for the short sequences and the corresponding period of the first four days of long sequences. Solid blue and dashed red lines are regression fits with slopes significantly or not significantly different than zero, respectively. FDP has a hump-shaped effect on daily travel distance (a), max displacement (b) and flight elevation (d); a linear effect on flight straightness (c) and no clear effect on proportion of active days (e) and roost departure time (f). Short sequences differ from the corresponding period of long sequences for all characteristics excluding flight straightness (c) and roost departure times (f).