is achieved within six to eight weeks. Interactions Male grey foam-nest tree frogs typically do not fight with other males of their species. Currently, there is nothing known about kin recognition and larval sibling competition in this species. Adaptations These frogs often live in arid and semi-arid climates and have developed several adaptations to live months at a time away from water. These include uricotelism, rectal water reabsorption, skin resistant to desiccation, and skin that changes color in response to temperature. They have relatively impermeable skin, which allows them to survive dry spells under tree detritus. They are also able to lose up to sixty percent of their body weight over the course of several months. The grey foam-nest tree frog forms uric acid and excretes it from their body as a nitrogenous end product. Anywhere between fifty and seventy-five percent of total waste nitrogen is converted into uric acid, while the remaining amount is expelled as urea in waste. This uric acid excreted can be released in a solid form and does not result in any net water loss for the frog. This is especially relevant for grey foam-nest tree frogs as they primarily inhabit dry environments, where minimizing water loss is highly important. Individual frogs can change their color from chalky white to dark brown, with the brown coloration presenting in a geometric/bark pattern. These frogs change their skin colors in response to temperature differences in order to maintain body temperature and minimize evaporative water loss. When they adopt a darker coloration, their body temperature will warm more rapidly with the sun's radiation. It is common for frogs to do this when the air temperature is below 36°C. White coloration helps them maintain a temperature below the ambient temperature by reflecting heat away. Their skin is resistant to evaporation that rivals terrestrial reptiles, earning them the nickname of "waterproof frogs", but this resistance is not present in their ventral skin. When met with a dry period, these frogs tuck their ventral areas under them so that only their resistant skin is exposed. They also secrete a water-resistant mucus to seal any small gaps when they aestivate. If disturbed and forced to move, they lose a significant amount of water and may not be able to survive the rest of the dry season. They are also able to lose up to sixty percent of their body weight over the