I am having the same issue. Pine tar works for a while but then the darn hens start in again! Been sitting in the kitchen window with a BB gun all morning and tagged 2 of them in the arse when they pecked him. Hopefully they will associate pecking with pain and knock this off as there are...
If it's a roo it will have to go as we have a roo already. I suppose they can mess up and slip a roo in a pullet box at the store.......................
We where told this one was a pullet at the farm store where we picked it up but it sounds like it is trying to crow now!approx. 10 - 12 weeks old. What say you??