Table 5. Comparison of body measurements in two periods of time (2011 – 2012 vs 2018 – 2022) in four populations, and their interaction of white-eared ground-sparrows Melozone leucotis , based on generalized linear mixed models. PC1 correlates with tarsus length, tail length, wing chord length, and beak depth, PC2 correlates with exposed culmen length and beak width.