I found this inside a chicken run inside a 4 foot high picket fence with underground wire around the perimeter and upon the chicken coop that is about 4 ft tall. No sign of digging. iit is about the diameter of an apple. Black and a bit like a dog poop.
Dauphin County Pennsylvania
Thank you for your question. We would need far more information to ID this. Please contact your county Extension for help. Here is their webpage: https://extension.psu.edu/dauphin-county Good luck!