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S. Text, Details about the linear relationship between distance to the resource and female body length

S. Figure, Comparison between real tracking and tested movements in the simulator

S. Dataset, Data used to calculate the drag force

S. Dataset, Probability matrices of returning to the island (Fig S1A)

S. Dataset, Energy spent used to calculate cost/benefit ratio

S. Dataset, Simulation results for distances ranging from 100 to 250 km

S. Dataset, Simulation results for distances ranging from 300 to 500 km

S. Dataset, Matrices used to build the figure 5