As an example of sexual dimorphism, the male Mockery Birds have a large hump on their beak, while the females have only a small, bony shield. The bird was named after its call, that sounds like laughter (much like the kookaburra's).
This serves as an example of sexual differentiation, where males exhibit a pronounced hump on their beak, while females display only a small, bony feature. The bird's name is derived from its unique call, reminiscent of laughter.