Hi!
Let me share a few things that I know chickens love! They like a pile of sand to dust bathe in. (My whole chicken run is sand, which is great because there's no mud when it rains.)
Chickens also love to sun bathe. If it's to too hot out, they will spread out in the sunshine. If you can give them access to a free range area, that's great, and if not, they do love apples, melon, kale, watermelon. Chickens are all about food! They like cracked corn too. They also like cabbage. You can hang a whole cabbage or cut one in half. Chickens love to peck peck peck and scratch. They also like raw corn on the cob.
In other words, the way to a chicken's heart is through it's stomach. hehe