Figure 2From: Explaining individual variation in patterns of mass loss in breeding birdsGraph showing the optimal amounts of mass tolose. This sketch (not to scale) demonstrates that the degree of mass lost to reach the optimal mass x* is greater than the loss necessary to reach the optimal parental mass x pers . Note that the shapes of the current fitness component, b(L), and the future fitness component, p(L), are arbitrarily drawn as a linear and a quadratic function here.Back to article page