I have a flock of 5. I moved them out to their coop a few days ago. They range from 8-10 weeks old, give or take. I've tried giving them snacks in addition to their feed and they want nothing to do with it! So far I've tried blueberries, raspberries, and mango. Only one out of the 5 ate a blueberry....and only one blueberry I was under the impression that chickens liked fresh stuff. Am I doing something wrong?