One of my very old birds has been moving pretty slow lately and today she took a turn for the worse. She hasn't laid an egg since last June. All she does is just sit on the roost, gets up once to eat and drink, and then back to the roost she goes. But at night she sleeps in a nest box. Today I walked out there and she had watery poop all over her back side and legs but still ate and drank a tiny bit. I think it may be time to dispatch her. She's lived a great long life but I don't want her to suffer her last few days here. So my question is- what would you do? And if you did dispatch her, how would you do it? I've never had to do this before and it's very hard for me. Any advice would be great.