I just haven't had time to sort out the chicken problem. I think however that it may be sorting itself out. Today was a horrible rainy day but I got 5 eggs from the nesting box and the Marans seem marginally less bossy and territorial. So thank you to all who gave useful advice. I may implement some later but right now I am hoping that life is settling down.
And the eggs are lovely. Just look at the colour of this scrambled eggs (today's lunch).