How do lizards use displays to defend territories?

Many lizard species defend territories to secure essential resources like food, nest sites, and refuges from predators. To avoid the physical risks of combat, these reptiles have evolved ritualized displays that serve as a form of territorial defense.1

These visual presentations often include:
* Posturing: Increasing apparent size by puffing up the body and erecting crests along the neck and back.1
* Color Signaling: Exposing bright patches of skin or extending a throat fan to signal dominance or intimidate rivals.1
* Stereotyped Movements: Engaging in repetitive behaviors such as push-ups, head bobbing, and tail waving.1

While these displays are often more pronounced in males, females of many species also employ similar movements to defend their territories. Although displaying makes an individual more visible to predators, territoriality is maintained through natural selection because it provides a significant reproductive advantage. In some species, these displays also function to advertise a male's presence to potential mates. Note that not all lizards rely on visual cues; some, such as autarchoglossan lizards, primarily use chemical communication to mark and defend their territories.1