How old is she? Maybe less than 2 weeks I’d drop the temp to 85. I don’t know why she is acting like she is unless she needs more room in her brooder. Does she have a mirror so she can see herself? She’s a wild duckling which could have something to do with her activity she has traits that a domestic mallard won’t have. Maybe @Isaac 0 can help. I love to see her gaining weight and she looks healthy. Poop looks good to me!