Greetings all! I hope someone might know how to tell a hen's age. I have 11 hens and they all look alike. One hen is old and doesn't lay eggs...she just keeps the others in line...her name is Darlin. My friend has a coop she has set up and has asked for a couple of my hens...which is cool except I'm worried I might give her Darlin since she blends in with the others. Any help or suggestions would be appreciated!