View source for Grouse

=== Contrast with other bird species ===
Sexual size dimorphism can manifest itself differently between grouse and other birds. In some cases, the female is dominant over the male in breeding behavior, which can result in females that are larger than the males.<ref>{{cite journal |last1=Mueller |first1=H. C. |title=The Evolution of Reversed Sexual Dimorphism in Owls: An Empirical Analysis of Possible Selective Factors |journal=[[The Wilson Bulletin]] |volume=98 |issue=3 |pages=387–406}}</ref>