My chickens are almost 4 months old. They have been out in their coop and run for 2 months now and very happy and content. I had heard that the nesting box should be blocked while they are in their "in between" stage, so I have a piece of cardboard blocking the opening and the whole thing is stuffed up with hay. They should start laying in 3-4 weeks so when exactly should I unblock the nesting box? I don't want them to just use it as a poop box but I do want them to see that it is there! If anyone starts laying early, I want them to have a comfortable place to do it! Any advice would be very welcome!