Yes this is true it is rare but true a rooster can lay an egg I had a rooster that I watched lay a huge egg I could not understand why he was sitting in the nest box until one day,I looked watched and waited.He did the egg song and popped out an egg he still was a rooster.So, I don't know, but I searched and searched and I did find an article on it so if you keep searching you'll find something explain how it happens. I've also had hens Crow. Whose hands are long gone as is the rooster and I just began a new Venture with poultry. I have 2 speckled Sussex 1 begin to look like a rooster and sure enough he turned into a rooster so I have a breeding pair now which is nice! And1 Production Red. I'm waiting for them to lay eggs and it's taking forever and all I could think about it before everyone wanted to lay them! I think it's 6 months now when lady online said read them a story at night,end story with a chicken recipe and they will start laying! I am prophesying now, to my hens,lay an egg!(♡)