Figure 2

Relation between lifetime breeding success and Pb exposure in blackbirds. Lifetime breeding success corresponds to the number of fledglings. Concentrations of Pb in tail feathers; the enveloping lines are 95% confidence intervals, n = 108.

Relation between lifetime breeding success and Pb exposure in blackbirds. Lifetime breeding success corresponds to the number of fledglings. Concentrations of Pb in tail feathers; the enveloping lines are 95% confidence intervals, n = 108.