I just read this, and still don't believe it. Even IF it were possible for a hen to develop a testis, by what means would the sperm be transferred to a female? There is another component there (quite necessary) that the article did not even mention. Utter hogwash.
Exactly my thoughts. I first heard this nonsense from a well respected poultry book. I was very surprised. No amount of hormones can EVER in any species, cause a true gender reversal.
I've heard people say this, but I don't believe it one bit. I understand the issue of hormones changing feather color. But, someone please explain to me by what means a hen grows male reproductive organs? That does not happen. Has anyone done a biopsy of a "transitioned" hen and found testes?