not much research on what they eat, but like most frogs, they probably eat small insects. Since they rely on the presence of trees, they are most threatened by the destruction of their habitat from deforestation. Even though they face threats to their environment, according to the International Union for Conservation of Nature, they are considered to be "least concern" for extinction. However, with many other glass frogs declining in population, bare-hearted glass frogs are also at risk. Global warming is also a threat to bare-hearted glass frogs. They need moisture and rain in order to not dry out, and lack of rain or warmer conditions can be dangerous. Biologists are interested in further researching and observing bare-hearted glass frogs as they can be good bio-indicators of how global warming is affecting, not only frogs, but other species in rainforests. Along with global warming concerns, studies have shown that predation events of Hyalinobatrachium colymbiphylum are become more widely documented and understood. Scientists are now documenting new sites of Ornate Cat-eyed snake species predation on the glass frogs in Costa Rica, where they feed on the glass frogs, toads, eggs and larvae, and small lizards (Escalante and Acuña). Breeding Breeding season is during rainy season, from late fall to spring. The process of breeding starts with males selecting a leaf or bush near a stream as their calling ground. Then they call to attract females, the sound is similar to a cricket, which is where they get one of their common names from. They stay in one spot to call from and will fight other males for territory and to win females. The fights between males are over a specific leaf or calling area and are won by one male pinning the other down. Once they attract a female, the eggs are laid on the underside of a leaf. Batches are 50-75 eggs, and are laid under leaves above streams where they are cared for by the male. The male's responsibility is to protect and keep the eggs moist, he does this through urination and osmosis (a process where water passes through the skin). Due to the nocturnal nature of the frogs, the male guards the batch during the night but eggs are stolen by wasps when they are not guarded. The wasps steal the eggs one at a time and can steal entire batches while the eggs are not guarded