The other thing is the waste of feed while the hens are learning, because the feeder has to be propped open all day and the wild birds help themselves.If my long term plan was to continue feeding them pellets then a treadle feeder would ease, if not solve some of the problems but I gather from people that getting them to use the feeder is often far from easy.
In the short term I'll leave more feed in the coop overnight and see when there is some left.