Figure 1. Mean number of individuals from outbred and inbred broods of great tits that recruited in good and bad environments.

The reproductive success of outbred (f = 0.0) and inbred (f = 0.25) broods are represented by white and black bars, respectively. Environmental quality is here defined in terms of each year's mean recruitment success relative to the overall median of all yearly values of recruitment (error bars: 95% CI).