Henhouse Harlot
Crowing
Veganism is a wonderful thing for consenting humans, and herbivores...not chickens. This is awful, that poor hen!!
A laying hen of that particular breeding, is a man-made creature, and she requires a great deal of protein, certain minerals and vitamins as well. She cannot be healthy on just greenery.
What @Battlepants said is truth. She requires socialization as well, to be happy 
I'm so sorry about this situation, I'm not quite sure what I would do in your place.
One thing though, I wouldn't waste your time trying to convince this person they're actually abusing that hen. It sounds like they've made up their mind. People will believe a lie sometimes, simply because admitting that you've messed up is so much harder. So they'll stubbornly insist they're not wrong.
A laying hen of that particular breeding, is a man-made creature, and she requires a great deal of protein, certain minerals and vitamins as well. She cannot be healthy on just greenery.


I'm so sorry about this situation, I'm not quite sure what I would do in your place.
One thing though, I wouldn't waste your time trying to convince this person they're actually abusing that hen. It sounds like they've made up their mind. People will believe a lie sometimes, simply because admitting that you've messed up is so much harder. So they'll stubbornly insist they're not wrong.
