Cleaning chicks bum

[Annaegg21]

I have two New Hampshire red chicks that were born about a week ago and I have noticed that there was some poo stuck to there bum. These chicks are naturally raised by one of my broody hens. I have heard of pasty bum before in chicks but everyone says it is uncommon for it to happen to natural hatching. They are eating and drinking fine and last time I checked they were passing poo fine. I’m not sure if I should help clean up the poo stuck to them or leave it because we have tried to do it before but it did stress the babies and mama out a bit. If I were to clean it what should I use. Thanks

 

[GC-Raptor]

A couple of my day old chicks had a tiny bit poo below the vent, and chicks were pooping OK. I left it but checked several times daily.
They are a month old today.
I cut a water jug and add warm water about half way. .
I hold chick in my hand with butt facing outward and dip butt into water for about 3 minutes and gently squeeze the poo and slowly remove.
I dip again for a minute if needed, then wipe with a paper towel. GC

 

[humblehillsfarm]

I just run the bum under very warm tap water and rub gently with my finger to help the poo soften and wash away. I dry the chick with an absorbent towel and put it back in the brooder.