Matieus27
Crowing
Ok so preen glands got it. So the males had very small testes and females didn’t have anything going on egg wise I don’t think I even seen any ovariesThen they are the oil glands under the skin on the tail. There should be a pimple like erection on the outside of the skin. When you watch birds preen, they always seem to start near the base of their tail while they collect the oil to work on their feathers.