My females eat oyster shell all year round, they also have grit out I think they just like it. Plus their calcium reserves are low from laying so they do need to build it back up.
Of course not duckling are just sweet and precious. But then hormones play into it too I believe. Even my other ducks Runners & Buffs will do some fighting in fall and spring but they don't draw blood usually just end up with a mouth full of feathers.
Maybe you should consider adding a drake...
If she's okay with the chickens and they don't mess with her keep her with them when my Muscovy was in the other coop she roosted with the chickens. Chickens on the roost the ducks and geese under the poop boards.
My Muscovy bully would draw blood too. Tonight she wanted to cause trouble and I almost picked her up and put her in the other coop but she finally went and laid down. Muscovy have a temperament different than other domestics they do like to fight. I could never have the drakes together always...
How old are your ducklings? What breed? Birds of prey are one of the worst predators for ducklings and adults, snapping turtles are another. And if you take them to the pond they may not come back to their coop at evening. As for coming back to the coop put their feed and water at their coop...
@StinkyAcres I know exactly what your going through. I only have 3 females left from my flock of Muscovy and for many years one the youngest who is now 13 had to live in the coop with the other ducks and goose she was so mean to her Aunt Joy. Last year all on her own she decided she wanted to be...
Bless her heart. They are guessing she has a heart condition? Or they know for sure?
I am going to tag @casportpony to me she is like an avian vet with her knowledge. She isn't one but she knows more than most of us.
Welcome to BYC. Please go to your original post about your blind duck; there are suggestions on it.
I have Muscovy femae who is blind in one eye, and it looks perfectly normal and a female Runner who is blind in one eye, and you can definitely tell it's cloudy