Fig. 4From: Adults have more male-biased sex ratios than first-winter juveniles in wintering duck populationsThe estimated temporal trends in the probability that a captured individual would be a male, among adults (solid black lines) and first-winter juveniles (dashed black lines), based on the mean (± 95% CI) predictions of our best-supported model for each species. The grey dashed line indicates a 0.5 probability of a maleBack to article page