Thank you. I just bought this one a few days ago and didn't notice this until yesterday. I have two others that don't have this. Any idea how to tell if the others are male or female? I had 2 and one died, so I bought two more. I can tell them apart, but not sure how to sex them. Should I put her in the "next" until she lays them? Or am I going to need a male to fertilize them after they are laid? Can you tell I'm totally lost when it comes to egg layers...unless it's chicken. Thanks again, Shelley