I've got a goat trough in my chicken coop that has pellets and crumble in it for my birds. The pellets are an All-Flock type feed (as I have a rooster and some pullets/cockerels) and the crumble is an 'All-way Feed' that I'm 90% sure is just another All Flock, but is non-medicated and good for chicks.
I live in the state of Oklahoma, and Big V Feeds makes some super nice quality feed that they sell locally! I've noticed my egg production has really gone up since I started using the All-Way Feed and giving oyster shell on the side instead of just layer feed. The All-Flock/All-Way has more protein than Layer feed.
About twice a week I'll throw them some whole oats or sunflower seeds in the yard, and my next bag of fresh goodies is wheat seed. I'd like to sprout the wheat for some extra protein and goodies this coming winter so my birds have greenery when everything is cold and dead.
My girls and boy(s) also free range my yard, weather permitting, for 2 to 3 hours+ daily. We're starting to see the ground turn green with lots of henbit, deadnettle, bluets, some buttercups and other miscellaneous greenery. They /LOVE/ the different flowers and weeds, and their eggs have been absolutely delicious.
I used to give them corn and scratch as I was copying my neighbor, who also gave me most of my chicken advice, but once I read up on chicken care and saw the difference in my birds and hers, I dropped the scratch and corn altogether. Use up your corn, but definitely consider a better whole grain for their treat. I don't know where you live and what's offered around you, but if you've got a good farm supply store maybe check and see if they've got wheat seeds or buy a thing of black oil sunflower seeds (or BOSS as commonly used on these forums). They'll definitely need the grit with the BOSS, though.
Another good treat that's slightly healthier (but should still be limited) are Soldier Worms. They're the freeze-dried larva of black soldier flies and are pretty high in protein and calcium. They're a little expensive but are better for your birds than mealworms, as mealies are mostly high in fats. However, in the summer months, you can make a soldier fly breeding area and gather the larva daily before throwing them to your critters.
Good luck!
