Figure 3
Hair cortisol concentration observed and predicted by the linear mixed model. Hair cortisol concentration by: (A) wolf population: observed (dots) and predicted by the linear mixed model (95% confidence interval as colored error bars). (B) Total length: observed (dots) and predicted by the linear mixed model with 95% confidence interval as shaded grey area. (C) Month: 95% confidence interval as shaded grey area. Predictions of the most supported model for wolves of the reference classes, 95% confidence intervals include fixed and random effects.
