Hello - I am expecting three Indian Runner Ducklings this week. I think I have a handle on the duckling plan. When they are old enough, I plan to move them to their duck house which is in a large fenced-in pasture (shared with two emus). Initially they'll have their own smaller fenced in area within that pasture, and the duck house has a small enclosed run attached for a little additional space, water, etc. My question is regarding feeding them once they are living outside - is it better to leave feed for them to have access 24/7 (in addition to whatever they forage) or would it be better to feed them twice per day (plus forage), particularly as a way to encourage them to come back in the evening? And if feeding on a schedule, how much is recommended for three females?