I imagine. I have had little giant years ago and fed geese aside chickens and guineas. Your feeder is similar to a litlle giant.TOR, with the feeder I made, I had geese, peacocks,
ducks, guineas and chickens. they all ate out of it.
I think if the little giant side on the bottom were taller be alot less spillage. Suppose it is designed for chicks to get feed also.
I do like pail feeder because it has a lid. Keeps the feed clean.
I am going to look at 60 degree or 90 degree 4 inch pvc eventually for the roosters.