i have heard alot of different opinions on when to switch to layer feed . i use blueseal brand feed it says to switch to layer at 20 weeks . but i have had some birds not start laying until 30 weeks or more . also lost a few 1 year olds to prolape. wondering if the cause is because of switching to layer feed to early. i was just going by the label on the bag 20 weeks. then i heard dont start layer feed until you see first egg wich confuses me because if ther not eating layer feed how can they start laying eggs.