Male ducks now acting differently

[2 many chickens]

I have 7 ducks, two which are drakes. Hatched them and raised them since birth. They are very loveable, give hugs and follow us around. Recently, My males have been following me around, almost chasing my feet.. biting my shoes. It's non stop. Running full speed after people's feet, trying to bite shoes and bite legs. It's not like I want to rip your flesh off, just a bit harder than the normAL bite. What's with them? They pretty much Run and fall over each other to bite and get feet. I almost slammed their gate on them by accident because they wouldn't stop running. Is this being aggressive? Or they protecting the females? Or do they just want to eat people's shoes and feet that badly??? How can I stop this? I can't keep stumbling over these two. The other ducks don't do this.
Thank you.

 

[TheTwoRoos]

It’s breeding behavior,in a way it’s aggression and I am unsure of how to stop it in ducks,maybe chase them away or grab them but I don’t know how to fix that behavior.

 

[Raenh]

Fancy does it, sometimes... less often then he used too. I did what @Miss Lydia suggested - showed him I was the dominant one by catching him, straddling him while holding him with one arm around his underside and one lightly pressing down to hold his head and neck down until he stops wriggling and is just huffing. Then he cuddles into me and i let him go. Sometimes i had to straddle him and hold his head by putting both hands on either side of his face and make like a tunnel so he couldn't move it - without putting pressure on his neck or head - I'm always afraid imma hurt him.