Fig. 2From: Physiological predictors of reproductive performance in the European Starling (Sturnus vulgaris)Representative examples of patterns of change in physiological traits showing breeding stage*year interactions: a) reticulocyte counts, and b) blood glucose levels, and traits showing an effect of breeding stage with no interaction: c) plasma creatine kinase and d) plasma non-esterified fatty acids; see text for detailsBack to article page