Fig. 4From: Days to visit an offshore island: effect of weather conditions on arrival fuel load and potential flight range for common blackbirds Turdus merula migrating over the North SeaProportion of blackbirds that would have been able to reach each coastal destination with different flight distance, respectively, during a autumn (n = 919) and b spring migration (n = 393), based on simulated trajectories with flow-assistance by real wind conditions. Age differentiation is only possible in autumn (first-years n = 461; adults n = 458)Back to article page