We had a Buff Orpington that wouldn't make the transition even though we use Smallholder Growers which are smaller pellets than most of the other brands. We used to bring her into the kitchen and grind the pellets up. We ground them up lees and less each day and after two weeks she was guzzling them down. Of course then she had the habbit of not eating until we fed her! Fortunately her brain eventually developed and now she is top hen in that flock.