Interested to hear about your 'all out, all in' policy, LadyA. I agree about not having to look after them in the winter, it can be a real problem, especially when it snows. And no eggs as a reward! It certainly worked for me this Spring, - luckily, the snow came when I had an empty run, having dispatched the old hens, and it was really good to be able to spend a few days and take my time thoroughly cleaning and disinfecting the run and coop before the new ones came. In my case it wasn't quite as smooth as I hoped- do you remember my problems with Violet, that nutty Bluebell who kept trying to attack me and had to be rehomed? - and another one died of no known cause overnight in the coop, and I sent a third off with Violet for company - so after that I introduced 3 more new ones, younger than the remaining first lot were by then, but it went OK as I have plenty of space and gave the new ones the coop end of the run and put the remaining two original ones in the other part. Intros were OK, a bit of chasing but just enough to establish who was boss.