Figure 1.

Estimated variance components for measures of spatial and temporal niche width. A variance estimate is shown for each sex, divided into unsuccessful and successful breeders. Filled circles show the estimated variance, and the bars show the credibility intervals around these estimates. Dashed bars show unsuccessful and solid bars successful breeders. Females are plotted on the left (in red online) and males on the right (in blue online). (a) Variance in maximum range (km); (b) variance in latitude at terminal point (°) and (c) variance in longitude at terminal point (°). (Online version in colour.)