chick with poopy butt

try running warm water over its rear end and wipe it. it wont be happy but it may help

You could look up "pasty butt" on this forum - it's fairly common but short lived.  I have dealt with it on the majority of my 40 chicks!  I wound up taking a small bucket of warm water to them and for the worst cases I soaked their bums in the water while working the dried poop with my fingers.  Not fun, but it gets the job done.  Then I'd wipe with a wet rag and dry with a dry rag.  I have read that pasty butt lasts about a week and my experience (thankfully) is that it's been shorter than that.  Best of luck!

running a week old chicks bum in water should be fine, i did it to a 2 day old and it didnt complain or get hurt

If it's not too crusted on there, you can even take a cup of warm (not hot, not cold :) ) water and a Q-tip and rub it off their vents.  Pasty butt is gross!

We had this issue the first week or so. We put just their bum under warm (not hot) water and just used a Q-tip to help loosen it a bit. It took a few minutes usually. That stuff is hard! After that, I dried them and put just a tiny bit of veg oil around the vent with a Q-tip. That kept the poo off for quite a while.

I am so thankful for this place.  I had never had any chicken experience and pasty butt was beyond my scope of understanding.  Until I came here.

I had 2 of my chicks with nasty pasty butt.It was crusty and hard to get off.

I cleaned them 2 - 3 x a day so it wouldn't build up.

They are 2 1/2 weeks old now and we no longer have this problem.

My husband's comment while watching me clean them up:  I am SO GLAD you are doing this, and not me.    lol.  

It goes away soon enough.