How common is it for a hen to change to a rooster?

[Alden Chickens]

This is a hen for sure





These four photos are of the chicken in question. It carries its tail different and has longer feathers on its "ruff/mane" (don't know the official name) I am in the process of trying to "cull the herd" Out of my 8 hens I am only getting 4 eggs a day. I know 2 of them are 3+yo so don't lay very often and one is either 2 or 3 so I am fairly sure she isn't laying. I am thinking maybe this one has decided to trade teams. What are others opinions?

 

[LoveThemBirds]

This is impossible.she is a leghorn and they tend to ahve big combs she is a hen.

 

[silkiecuddles]

I've read of some hens crowing big combs and wattles and crowing. It must be something to do with their hormones as they age. I have a cochin hen who is 5, no longer laying, but she has of late grown a great, big, red comb.

 

[LoveThemBirds]

Crowing is just a hormone imbalance...

 

[Alden Chickens]

I forgot to mention that my white hens are "tetra Tints" a sex link chicken bred for Tractor Supply A white chicken with brown eggs. And I have read up on the biology of hens becoming roosters so I know it can happen- just didn't know how common it was.