Humming birds coloring pages

Hummingbirds exhibit sexual size dimorphism according to Rensch’s rule, in which males are smaller than females in small species, and males are larger than females in large-bodied species. The extent of this sexual size difference varies among clades of hummingbirds. For example, the Mellisugini clade exhibits a large size dimorphism, with females being larger than males. Conversely, the Lophomithini clade displays very little size dimorphism; males and females are similar in size.
Sexual dimorphisms in bill size and shape are also present between male and female hummingbirds, where in many clades, females have longer, more curved bills favored for accessing nectar from tall flowers. For males and females of the same size, females will tend to have larger bills.