Post your thoughts: trimming down feathers to prevent poo sticking?

[aart]

A warm rag should eliminate pasty butt. Also, it might be time to put some DE into the feed to deworm parasites.

Will do. I've also got some worm medication - should I do those at the same time?

Probably. I just prefer DE over worming medication that makes eggs toxic for a week. It makes me wonder what it is doing inside the chicken's internal organs.

DE does NOT kill internal parasites.

Runny poops can be caused by many things, it's not an automatic 'worm' diagnosis.

Get a fecal flotation exam by a reputable lab that can report on species and counts before worming.