My chicks butt is very bad I don’t know what’s happening Help me

[Chickababie01]

My 3 day old chick is doing bad , he couldn’t walk or anything but now it’s sort of walking but it doesn’t walk like the others and his bum looks like this HELP PLEASE, it walks with it’s little
Leg extended and in its butt a

 

[Chickababie01]

It’s little butt always has poop stuck inside

 

[Macchickenman]

My first chickens are only 6 weeks old but I washed gently w warm water until the poop comes off