I want to be able to train my girls to come when called and the only way I can think of doing that is with treats. I've offered cheerios, millet, sunflower seeds, broccoli, carrot, tomato, grapes, strawberries, oats...the list goes on and on. My girls are around 5 weeks old and they simply refuse my treats! I've even tried touching their beaks with certain foods to give them a taste, but no go. What am I doing wrong? I thought chickens ate everything! Thanks in advance!