Fig. 3

Morphometric analysis of the Monk Parakeet. Morphological differences between sexes in Monk Parakeet. a PCA for the five variables analyzed (height, width and length of the bill; length of the tarsus; total length, total weight and wing length). Polygons indicate convex hulls, and females are in orange and males in blue. b Box and whisker plots of those morphometric variables for which significant differences were detected using one-way ANOVAs. Boxes indicate the 25th and 75th percentiles (lower and upper quartiles, respectively) of the distribution, while the central band indicates the median. “Whiskers” indicate 1.5 times the interquartile range. Points indicate outliers