last yr i had 6 in a unsecured coop, think a weasel got them. fixed that up and will only use it for young ones before adding with others. i would like to think my big coop is secure. we have wire mesh on bottom so nothing can chew through that. the poop door has to clicks to it and the door they use has weight on it so a raccoon can't lift it, and the door i use has two latches. i think if something gets to them is because i didn't close them up.