Equilateral mixture triangle (EMT) depicting the proportions of macronutrients (protein = P, carbohydrate = C, and lipid = L) in annual bear diets (black dots). The geometric mean is shown by a red triangle. Ellipsoids predicting 2‐sigma and 3‐sigma regions are given in blue and red, respectively. Curvilinear principal component axes in acomp geometry (PCA.acomp) are shown with green lines. Component 1 (“horizontal” curve) explained 80.2% of the variance, and component 2 (“vertical” curve) explained 19.2% of variance. Corners represent 100% composition of the labeled macronutrient