hello @Mclarenflatchooks ! welcome to BYC 
besides the above, you could trying wetting or fermenting the feed; there is much less waste that way too, and if you are feeding grain, fermenting releases nutrients otherwise unavailable to the birds.

besides the above, you could trying wetting or fermenting the feed; there is much less waste that way too, and if you are feeding grain, fermenting releases nutrients otherwise unavailable to the birds.