Boy or Girl Rouen??

[LordDuckWings]

CONFUSED.
About Saturday we had our first egg. The thing is, 'bout a day earlier this Rouen mounted my Buff. My rouen had a green bill with black spots. No curly feather on its tail, and a small sheen of green on his/her neck.
Please help??

 

[sourland]

In the absence of drakes, hens will sometimes mount one another.

 

[drumstick diva]

Also with the red light we can't see any colors on your duck.

 

[Gray Farms]

That's a hen.