My buttons are 4 weeks old now and I can't figure out what gender Curt may be. He doesn't quite look like the rooster on the right side of the picture. On the other hand he does. Curt has some red tail feathers like his brother, but no red on his chest and the blue is more gray with speckles. He is a mystery to me. Hopefully you can tell me more. I intend to sell some soon and don't want to accidentally give away two roosters. Thank you.