They can be consumed raw to satisfy a small amount of hunger with a very high dose of radiation and a high disease chance, or cooked for additional benefits.
- Point Pleasant, on the ground near the Mothman statue and directly west of the statue at the shrine next to the Silver Bridge.
- Clancy Manor, first floor near the fireplace, second floor in the sleeping bag room. Ten clusters in total.
- Ingram Mansion, six clusters inside the house.
- Moth-Home, five clusters can be found inside the shrine.
- Sacrament, five clusters around the shrines in the walled encampment.
- Kanawha County Cemetery, three clusters found in a shed to the left of the road.
- In holding cell Z01 of the Enclave research facility.
- Mothman cultists used a "holy oil" made from these eggs to bless their effigies.
- Prior to patch 184.108.40.206, the Green Thumb perk allowed double the Mothman eggs to be collected from each cluster.
- Unlike other eggs, Mothman eggs are not classified as meat, therefore the Carnivore mutation has no effect. Despite being harvested in a manner similar to flowers, fruits, and vegetables, they aren't classified as such either and therefore the Herbivore mutation also has no effect.