How often would 12-year cicadas face their predators?

Twelve-year cicadas, emerging in massive numbers during their synchronized life cycle, face their predators primarily during their brief adult stage, which lasts about four to six weeks. During this period, they are vulnerable to a variety of predators, including birds, mammals, and insects. Their strategy of emerging in large swarms helps to overwhelm these predators, ensuring that a significant number survive to reproduce. After this short window, they return to the ground to complete their life cycle, spending the next 12 years underground.