We have long known that we attract "special" pets. A chicken that needed a hysterectomy, a cat AND a dog on anti-anxiety medicine, a duck that didn't produce the oil to condition his feathers, a dog with seizures, and so on and so on. So it would only make sense that our rooster would be special, too.
On the plus side, I finally figured out why Gretchen and Maggie were fighting. It happened the other day when I heard the usual frantic flapping of wings that generally means trouble. I ran to the window and looked outside in time to see Minna, pinned down underneath Gretchen who was trying his very best to produce what I can only assume would be called "duckins," a sort of duck-chicken hybrid creature. Maggie generally takes it upon himself to protect Minna and this attack on her was more than he could tolerate. To add insult to injury, Gretchen apparently tried to mate with Maggie as well and you can imagine how well that went over with Maggie. Hint: it ended with much flapping of wings, pulling of feathers, and jabbing of beaks.
When I was at the vet's office with Maggie the other day (yet again - I should probably just set up camp in the parking lot or else buy a horse trailer and just live on the road, hauling all the pets from one vet clinic to the next) I asked the vet if that was a common occurrence, roosters mating with ducks, and she said that she had never heard of it happening so I guess that makes us special. Lucky us.