I found a young layer sitting on the roost, very lethargic. Wouldn't eat or drink. Could barely hold herself up. Her belly was very full and she looked like had been deficating fine. I thought maybe she had an egg stuck so I put her in some warm water. She died about 5 minutes later. Curiosity got the best of me and I wanted to find out what took my sweet hen. After some investigation I found she was completely full of urine. What would cause my hen to hold so much urine?