It exhibits sexual dimorphism with the male up to twice the size of female.

However this is only the male, for the species exhibits sexual dimorphism.

It exhibits sexual dimorphism, with the females being larger than the males.

The female exhibits limited sexual dimorphism, having an olive back, but is otherwise similar to the male.

This species exhibits sexual dimorphism where the females and males look different from one another.

The species exhibits sexual dimorphism in both shape and colour.

This species exhibits sexual dimorphism, with the male being slightly larger.

A number of species exhibit sexual dimorphism in size, bill length and weight.

Males and females exhibit little sexual dimorphism in overall body size.

This species exhibits sexual dimorphism, the female having a much longer bill than the male.