Lava lizards have a breeding ritual where males will compete via head bobbing to avoid physical conflict. Research has found that head bobbing achieves a greater response when the response is immediate as compared to a 30-second delay.[6] Larger males will receive greater aggression from other males and greater assertive responses from females.[7] There is no current data that supports ecological competition is higher between same sex individuals however.[8]
^Carrió n, Paola L. & Valle, Carlos A. (2018-05-01). "The diet of introduced cats on San Cristobal Island, Galapagos: cat feces as a proxy for cat predation". Mammalian Biology. 90: 74–77. doi:10.1016/j.mambio.2018.02.004.
^Clark, David L.; Macedonia, Joseph M.; Rowe, John W.; Austin, Michaela R.; Centurione, Isabella M. & Valle, Carlos A. (2019-09-05). "Galápagos lava lizards (Microlophus bivittatus) respond dynamically to displays from interactive conspecific robots". Behavioral Ecology and Sociobiology. 73 (10): 136. doi:10.1007/s00265-019-2732-6. S2CID201834524.