Ducks breeding chickens?

[links_56]

Hi, Is it common for a duck to try to breed a chicken? My ducks are screwing the hell out of one of my chickens.

 

[horsejody]

I used to have a rooster that liked to breed a cat and another rooster that was in love with a huge turkey hen. If nobody is getting injured, I wouldn't worry about it.

 

[chickensducks&agoose]

your duck is a pervert... I have a perverted goose, who jumps my ducks whenever he gets a chance. poor hen.