Why is my female duck mounting?

[GracePoultry]

I was filming myself take care of all the animals this morning and happened to capture this. what is going on here? All of my ducks are female, and I can’t have drakes. Please tell me she isn’t a boy

 

[sourland]

Not uncommon for duck hens to mount one another - especially in the absence of a drake.

 

[Jenbirdee]

It’s 100% normal. I had all girls for many years and they do this all the time I call it play mating lol

 

[Blue Andalusian]

I was filming myself take care of all the animals this morning and happened to capture this. what is going on here? All of my ducks are female, and I can’t have drakes. Please tell me she isn’t a boy

i'm guessing you know this because you own ucks but

1. some rakes have green on them
2. rakes have curly tails, hens usually have lat ones