Hi, after reading just about every article on the web about poultry egg laying problems i have decided the following: adding extra crushed oyster shell into their feed at the rate of 1oz per 10oz, it might seem excessive but i have checked the lable on their feed and although it states that extra calcium isn`t needed it doesn`t state what percentage it contains tells me all about protien content 16percent etc.Allen & Page organic layers pellets. Could it be that their new feed is too different in its content to what the poor little things have been eating, (have read that they get some pretty nasty bits in their diet (chemicals))Still looking on the bright side the one that is laying (I call her 9 am) approx time that she lays is pretty reliable, they all look much healthier, combs and wattles now turning red, happy to scratch what was an immaculate lawn to shreds in their pen and quite eager for their treat at tea time, 2 of them will only sleep in the nest boxes so have put 2 boards in to prevent entry at night (will end in tears)hoping that they will use their perches to roost.will also be putting the new girl in tomorrow night , Lesley Austin from the BHWT suggests lightly spraying them all with a dilute solution of vinegar so they smell the same and wont peck her at night, still havn`t named 2 of them but my other half calls them Anne Robinson 1 & 2 . Thanks to all for the help ..alan