Can hens turn into roosters?
The hen does not completely change into a rooster, however.
This transition is limited to making the bird phenotypically male, meaning that although the hen will develop physical characteristics that will make her look male, she will remain genetically female
an two hens mate?
When the dormant, right-side gonad is switched on, it develops into a male sex organ, called an ovotestis.
Scientists have found that an ovotestis will produce sperm.
A sexually reversed hen with a 'turn-on' ovotestis, will actually try to mate with the other hens in the flock.