"The female superb fruit dove barely resembles this extravagant male; instead of his magenta crown, yellow cheeks, orange neck, white throat, and black breast-band, she sports simple green upperparts and a sickly gray breast. This dramatic difference is known as sexual dimorphism and it is quite common among species that don’t require the female to impress her mate; it allows the females to retain cryptic colors that help them avoid predators, even as their own sexual preferences drive the males to become increasingly ornate."
Excerpt from "Birds", published by Abrams, 2021