What size difference typically exists between male and female raptors?

In many raptor species, including hawks and owls, sexual dimorphism is a significant characteristic where females typically surpass males in size. This size difference can be observed in various physical traits, such as wingspan and weight. The reason for this discrepancy is often related to reproductive strategies; larger females may be more effective at nesting and providing necessary resources for their young, requiring more body mass to support high-energy demands during breeding and incubation.

Additionally, having females larger than males can reduce competition between the sexes for food, as larger females can hunt different prey sizes effectively. This size advantage allows them to excel in terms of hunting and raising their offspring, contributing to the overall survival of the species. Therefore, stating that male raptors are generally smaller than females accurately reflects the biological and ecological roles these birds occupy.