My ducks are about 5 weeks old and have been acting perfectly fine. Both quacking and and wagging their tails and running around a lot in their coop and run space not hunched and their eyes look fine. I have noticed their breathing more but I figured it's just because they are a heavier breed of duck. They have increased the amount they drink I've noticed and have been eating more too which they are growing ducks so makes sense. I did recently change their feed so I'm not sure if that's the cause or not, but in their coop there's a lot of good solid poop and I'm not sure which of the two ducks is pooping liquidy diarrhea but I'm noticing it around. I haven't been giving them treats when this all started happening and it's too cold for them to forage right now. Just wondering if this is something I should be worried about or not.
One of the poops I noticed. There's no white so does that mean it's not bacterial or parasitic? I'm not really sure on this stuff :/
I don't quite know if it started around when I gave them different food or not but I did start noticing it a few days ago. And there is still quite a lot of good solid poop that they output I just don't know who's doing what. Maybe I should try and sit around and see.

One of the poops I noticed. There's no white so does that mean it's not bacterial or parasitic? I'm not really sure on this stuff :/
I don't quite know if it started around when I gave them different food or not but I did start noticing it a few days ago. And there is still quite a lot of good solid poop that they output I just don't know who's doing what. Maybe I should try and sit around and see.