I'm looking for an answer too. Yes, it does happen! I have 31 hens, 6 roosters, and 4 ducks. One drake and 3 girls. They're 4 months old. (Except for 20 hens from last year). My roosters are going "after" my female ducks. At first it was one, but I saw 3 on her the other day. Mister duck was...