Only half right: species with female-biased sexual size dimorphism consistently break Rensch's rule.

Grouping all 21 taxa, Abouheif and Fairbairn [2] considered owls (with a slope significantly >1; table 2 ) to be an outlier; excluding this taxon, they found homogeneous effect sizes across the remaining taxa and concluded that their results revealed “a highly significant, general trend consistent with Rensch's rule” (p 552).

also in 132,142 other papers