This thread is from 2008. The person you replied to hasn't been on BYC since 2016.I am having the exact same issues. We have 6 month old guineas and they love the roof on my house. I am in a back room, at my computer, doing my homework and I hear them running all over my roof. I have been thinking the same thing...I sure hope my shingles can hold up to the 5 of them.