What’s wrong?

[Amsignorelli]

We have a chicken who seems to have a larger backside than the others, and is a little bit lazier also. Her feathers look like they’re wet but she hasn’t gotten wet anyone know what could be wrong

 

[Wyorp Rock]

What breed is the chick?
Can you get a photo of him without being held, picture of his poop too?
What do you feed?

Is the chick active, eating/drinking o.k.?

I see new feathers coming in, sometimes chicks can look a bit odd during this time.
The bigger belly - does it feel like it has fluid or is it hard?