Greetings from Reno, NV! Have a solid coop and pen, with mesh and wire all around to prevent diggers. Came out today and traced a mole or vole Trail Burrowing right under all that "security" to get into the pen. Like a prisoner trying to get INTO prison! Do I need to be worried for my ladies? The hole that made it into the pain could not have been more than 2 in 3 in maybe in diameter. So thinking it was more like a mole. What are they after--the food?