Really, yours hate earthworms??? I just watched mine fight over some earthworms my 5 year old dug up.
It was something I was afraid they
would go after...I spent a few weekends gathering a variety of earthworms in unmentionable places
(thousands and thousands plus the egg sacs)...I really wanted to raise them and collect their castings for my gardens. (To each their own!) I decided I'd put them in the compost instead of keeping them in a tub. I've seen the chickens play with them, but they don't eat them.
When I weeded out my flower beds this spring I tried feeding some to the hens that hovered around me. NOT ONE of them would eat them. As I was just starting with chickens, I assumed it was a universal thing. I'm more worried about the starlings getting my worms than I am my own chickens.
After a good rain the other day, I filled and moved their waterer, and revealed 3 fatty earthworms...one of the young chickens played with one, then dropped it. They don't refuse any other treat, so I'm not sure what is so different about our worms
OR chickens? They LOVE Japanese beatles, mealworms (we raise), and any grub or worm we find on our veggies.