My little chickens are about 4 months old (Bantam D'uccles), they found their first earthworm today. One of them got it pulled out of the ground after about 5 tries and then the chase was on. I had 23 chickens chasing one poor chicken all over. I don't know how he did it, but he finally managed to gulp the worm down before they could take it from him. It's funny, I had just offered them meal worms and they looked at them like the things were going to jump up and attack them. It took me 5 minutes of coaxing to get them to start trying them.