If you build it, they will call! 🗣️🐸 When coronated tree frogs are ready to mate, the male will locate a water filled tree cavity and begin calling to nearby females. If the female chooses him, she will lay her eggs in the pool. As Smithsonian scientists prepared to release frogs bred under human care to the wild, the team wondered if they could improve the likelihood of the frogs breeding after release. They built artificial tree holes made of different materials to test which, if any, the fr