Female Golden Whistlers

["Alan Gillanders" <>]

"..it may be due to the degeneration of the gonads which change the 
chromosomes from XX to XY and therefore the bird begins to assume male 
characteristics.  This apparently occurs in the domestic fowl.  Does anyone 
know if this is true?"
I am interested if this is the case but there may be another explanation in 
the change in hormone production. CV the feminisation of older males and the 
growth of body and facial hair in females of the species Homo.
Regards,
Alan

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