Girl Peacock (peahen) changes into a peacock

Peahens (girl peacocks) are supposed to lay eggs and be mommies of peachicks. But this peahen is doing something weird, she is growing beautiful peacock feathers only seen on male peacocks. We have no idea why this is going on and have seen this happen to 4 peahens in 10 years. In addition, our web site http://www.peafowl.com has had at least a dozen inquiries on this same issue. Many of the questions have been like this, "I had a male and a female peafowl and now we have 2 male peacocks. How could this be?" We have no idea why but this is happening more and more. We have a web site devoted to our he or she peahens at: http://www.peafowl.com/heshe.htm We would be happy to hear your theory as we have no idea. For more information contact dennisfett@yahoo.com