We have recently switched over from Medicated crumbles to pellet poultry feed (and will switch to layer feed as they get older) but I'm not sure how much they should eat. We fill the container (a standard plastic "chick" feeder) in the morning and by mid-later afternoon it's mostly empty. Should I be refilling it? Sometimes I do, sometimes not, depending on the hour, as they go in to sleep for the night without the food. They usually get snacks in the afternoon too - veggies and bugs my boys dig up from the yard for them. Thoughts?