I am trying to decide whether to treat my bird with water belly or put her down. It looks really painful. This is the second time that she has gotten this in the two months that I have owned her. She has never laid me an egg. It went away on its own the first time because I didn't know what it was. Now it seems clear that she is internally laying and her abdomen is HUGE. She can barely walk. I haven't had to put down an adult bird yet. What is the most humane way to do it? I am a vegetarian so I won't be eating her.