Ok, so I have a Serama. It's about 21 weeks old and until now I was confident it was a cockerel. Why? Because it was crowing and it's comb and waddles are quite large. Here's the odd part. He lives in a flock that consists of 3 other birds. As I mentioned before, he was crowing like crazy for about a week, and then he just stopped. Not a peep out of him since. Just last night, I found a small, white egg in the nesting box. I assumed it was my oldest silkie (who is also 21 weeks old) just laying extremely early (which is odd because they aren't on layer feed so I don't know why she would be prematurely laying). So I gave her a thumbs up and brought the tiny egg inside. The two others aren't old enough to lay. Today, my cockerel won't leave the coop. He's settled in the nesting box making noise and fussing around like a pullet that is about to lay her first egg. What's going on? Was that egg actually his? Thanks!