My mallards are three months old. One of them is for sure a male. He has almost a full green head and a white ring. He's also getting dark brown chest feathers and a white body. My other mallard kept the female colors untill a few days ago. She started to get lighter colors under the body and is now getting green feathers around her beak. Still no white ring though. I'm so confused. Can females get the green face? I'm not sure if she just maturing way slower than the other one, or if she's gender confused? Lol She also quacks. I'll try to post a pic.