I went to my local reptile shop today and picked up a cup of 100 mealworms (even though there were probably 30 in there). As soon as I started tossing them into the chickens they started going crazy. They LOVED them! I ended up just dumping the cup into their food dish and they must have ate them all because there are no more worms left lol. I also bought some wax worms which are high in calcium so I will give them to the chickens in a couple days.