I have had my chickens on crumbles since they were chicks i have a mix of chickens 10 silkies 3 bantams 4 wyndottes 2 polish well i thought i would switch to pellets but... they acted like they couldnt eat them so i put them back on the crumbles and it is so messy so my question is can they eat the pellets or am i stuck with feeding them crumbles they are all between 4-7 months old Thanks