Yup, i yell CHICKEEEENS, too! My kids go out there and make clucking noises which amazes me. They don't meow when they want the cat, or bark when they want the dog, so, why .....? But sometimes I go out there and say nothing and they still come running, so maybe they just think i am the Food Goddess and they shouldn't miss an opportunity to get their goodies, lol! 
