Fig. 3
From: The use of nocturnal flights for barrier crossing in a diurnally migrating songbird
Bayesian linear mixed model coefficients for the effects of tailwind assistance, water:land distance ratio, and time of day on purple martin water crossings. Only the distance ratio had a significant effect on decisions to initiate water crossings (they were less likely to cross a water body as the distance savings decreased). Coefficient estimates are shown with 50 and 95% credible intervals. Continuous variables were scaled and centered prior to analysis