In many species the males use the noises during their courtship displays.

It also has an elaborate courtship display and a variety of loud mating calls.

Breeding usually involves some form of courtship display, typically performed by the male.

This is believed to be part of a courtship display by the male.

The nest may also form a part of the courtship display such as in weaver birds.

Female choice, therefore, may be the reason why such elaborate courtship displays are found in males.

The male also holds the tail erect during courtship displays.

The offering of fish by the male to the female is part of the courtship display.

This species is often seen soaring, and has a spectacular aerial courtship display.

If he were a real lizard, I'd say it was a courtship display.