I love to see mine come running when I yell "yummies" (that is my word for treats)! If they are distracted or I need to call them to me I usually only give a 1/2 oz or less per bird. My treats are usually scratch, corn cobs, sunflower/bird/pumpkin/etc seeds, or meal worms (I raise them so they are live!) .
I have a cup that I marked so I only give them up to 1oz per chicken - I also spread last nights left overs and veggie scraps in the morning before they come out of the coop, so they have to hunt and scratch around to find them. I gave them a couple oz of corned beef/chopped and the leftover cabbage and cooked carrots, they loved it!! Oh, and I also have a hanging feeder that I will put in a cabbage or a head of iceberg, romaine etc.
I have a cup that I marked so I only give them up to 1oz per chicken - I also spread last nights left overs and veggie scraps in the morning before they come out of the coop, so they have to hunt and scratch around to find them. I gave them a couple oz of corned beef/chopped and the leftover cabbage and cooked carrots, they loved it!! Oh, and I also have a hanging feeder that I will put in a cabbage or a head of iceberg, romaine etc.