This is a pretty old thread, hopefully replying will put it to the top of the list again - it's the first I have seen that describes my duck's behavior. My duck hatched in February and I am certain she is a she - quacks, no drake feather.
My little Tootsie keeps coming up to me, my daughter and the dog and flattening herself out. She'll come up to us, kind of sit on the ground and stretch her neck as flat as she can then make a noise that is somewhere in between a quack and a purr. When you pet her back she hikes her tail straight up. Initially I thought she just wanted some lovin' from us but now I am thinking it's a different kind of lovin' she is after. If she is laying eggs she is not doing so in the hen house. She now roams during the day with the chickens because she was wearing a path pacing when they'd fly the coop. For the sake of her sanity I had start keeping the coop door propped open so she can come and go with them.
Hoping someone can finally (definitively) tell me what she's saying/wanting, as the hardware store that I bought her from said they've never seen that before (I showed them a video of it). So I have that question, and then am also wondering, if she is wishing to mate can I take her to play at a drake's house for a day or does it not work like that? Oh, and I guess I should also ask, if I managed to pull something like that off and hatched a drake later, would I have to worry that future ducklings would swim in circles or have inbred issues? {that could be a dumb question but I honestly don't know}
I sincerely appreciate the help!