How to diagnose a sick duck that is off but doesn't have symptoms

[austroberta]

May I suggest that you get a baseline weight on her, then weigh every 2-3 days? I recommend using a food scale and weighing in grams.

I really need to do this, but to me, weighing ducks is like herding cats. She hates being handled.

 

[Miss Lydia]

That's great news!

 

[austroberta]

That's great news!

Yes. I was beyond overjoyed when I saw she was her usual chatty, hungry, foraging self.