Since they like the scratch using a bit for training wouldn't be a bad idea. Give the bag a shake, pick a verbal call (mine's just "chook chook chook") and toss some scratch down. Do it 1-2x a day and before you know it they'll consistently start to come to you when they hear the bag or your call.
As far as veggies and such, mine mostly get whatever we don't eat: carrot greens, cauliflower leaves, stripped corn cob, things like that. Better giving it to them than putting it in the compost, and anything they don't eat will break down in the run which I can harvest later as garden soil.
As far as veggies and such, mine mostly get whatever we don't eat: carrot greens, cauliflower leaves, stripped corn cob, things like that. Better giving it to them than putting it in the compost, and anything they don't eat will break down in the run which I can harvest later as garden soil.