I've decided that the escapee chicken is actually very smart. She still insists on escaping each day to lay her egg and is onto her 4th different spot now (well the 4th one that I have found anyway...). We had a patch of really cold, windy, snowy weather for a while and during that time she discovered the bike shed and took it over as her daily laying spot. The first time I discovered her in there it was because she had actually rung the bell on the bike to alert us that she had finished. She now strolls up to the deck door when she has finished laying and "asks" us to let her back into the chicken house. I'm hoping she will keep using her new nest for a while yet... it is clean, dry and easy to find!