Here is a picture of her.
HELP! My hen's tongue is hanging out under her beak.
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I'm having trouble finding the thread. I did find one where a chicken swallowed her tongue. I would try to get her to a vet tomorrow. If that isn't possible, you could get the tongue back in place, and try to heal, suture, or super glue the opening so that it will close. Can she eat and drink? You could make a mash of her feed with water so that she is getting some nourishment. Please update us tomorrow.