wet feather???

[Duck mommy 2019]

my 15 week old khaki was swimming, and i noticed a small part of her feathers were wet. it didn’t seem to bother her, but i definitely don’t want it to get worse.

she is eating purina flock raiser and i haven’t seen this issue with my other ducjs

 

[DuckGirl77]

A picture might help.
Sometimes if my ducks haven't been swimming for a while, some of the feathers look like they soak up some water. If this is what is going on with your duck, I would not worry about it.