My 5 Barred Rocks are 2 weeks old. I've tried giving them some treats (blueberrys, plain yogurt, peach)....all of which they turned their noses up at. Every once in a while I'd throw an ant in I found crawling around...and they seemed to like that. Then after reading about mealworms on the site.... thought I'd give that a try. They went wild... chasing each other around peeping.... they go crazy for those mealworms! Twice a day I make sure each one gets a worm. There's one chick that doesn't seem to like them as much.... but the other 4 go nuts over those mealworms.