solid central greenish-blue patch within an orange background (OB) are territorial and more aggressive than males that lack the greenish-blue patch (O), therefore suggesting that OB males will fight more for their mate. These two types of males, therefore, are thought to express alternative reproductive strategies due to their differences in territoriality. The blue patch can be described as a characteristic that heavily contributes to sexual selection since females tend to mate with males that have larger blue spots. Multiple male genders Some, such as Stanford professor and biologist Joan Roughgarden, have suggested multiple male genders in this species. Among differently colored male tree lizards, there are different hormonal profiles. On the day a male tree lizard hatches, researchers think that high blood levels of progesterone and then later, as a juvenile, higher testosterone levels will cause him to develop into an orange-blue type; low progesterone and later lower testosterone levels, as a juvenile, may lead the male to develop into an orange type. During dry weather conditions, orange-type males' corticosterone levels increase, which causes testosterone to decrease, leading them to be more likely to leave their territory and become nomadic. Orange-blue males do not have this hormonal response to the weather, and remain in their territories regardless of climatic conditions. Speed and stamina The differences in throat color can also be related to speed and stamina in male lizards. OB males or dominant males are significantly faster than O males and have higher lengths of stamina than O males. The link between social hierarchy and locomotor performance can be traced to the suite of displays that identify a dominant individual being the presence/size of the blue spot on their throats. These activities may be affected by different intensities and duration and it is possible for an O male to have better speed and stamina than an O male, it is just uncommon. The OB male having territorial and defensive traits makes them spend more time fighting or displaying and asserting their dominance over the O lizards and exerting that amount of physical strength allows them to develop the higher rates of speed and longer durations of stamina. When the O male competes against the OB male and loses, the O male does not get the opportunity to utilize their speed and stamina and therefore causes them to have decreased rates of speed and shorter periods of stamina. Significance of