Hi I posted about this a long while ago and didn't get much response.....I have 2 pekin ducklings and 6 buff orp chicks. They are 4 and 6 weeks old. I have been feeding a 50:50 mix of non-medicated purina start/grow and purina flock raiser to them since they were a few days old. I plan to feed them this until they are 18 weeks. After that I was planning to feed them purina layena. I'm having second thoughts now after reading and hanging out on this forum. Is layena okay for ducks too? The flock will free-range 1/2 the day and I will propbably give them scratch and treats such as fruits and veggies daily. So can I go along with my plan? Thanks!