I'm completely new to the world of chickens so please forgive me if this is an obvious question. We were expecting to get chicks so we bought some chick starter feed from petbarn but then our chicks were sold before we got them so we ended up getting point of lay hens. We bought them some Barastock darling downs layer feed and they have this in constant supply. They also have a little bowl of shell grit. I've given them a small bowl of the chick food as well to use it up. Is there any reason why I shouldn't be doing this? They seem to like it.