Figure 4From: Functional morphology and integration of corvid skulls – a 3D geometric morphometric approachMultivariate regression of shape variables on log centroid size. Three-dimensional plot of the principal component scores. The colored lines are intraspecific regressions of the shape coordinates on log centroid size and thus estimate allometry within species. The dashed line is the regression of shape coordinates on log centroid size over all species.Back to article page