I have some 2 1/2 month olds and recently switched to pellets with my older ones. The younger ones are in with the older ones so feeding pellets and baby crumbles isn't possible! I can't keep the right ones eating the right food. I know they should still be on baby food but they are all together with my layers. The past few days I have had 2 die and I have 1 in the living room and she is really thin. I have 2 possible theories going...a few days ago it was chilly and it rained, they were out in it. Could they have gotten a chill? Theory #2, are they not getting enough from the pellets and should I switch back to all crumbles?