2 problems: runny poop, pecking/feather loss HELP

[theabee]

I have a flock of four hens (no roosters). These are my first birds.
The only other problems I have had is that Aza had a compacted crop, which I fixed with an epsom salt bath, and mysterious blood on the roost a while ago (probably just a cut or something).

Here's a list of problems in my flock:
-Aza has a butt that has been pecked bare
-Mrs. Hudson has a neck that has also been pecked
-Donna's chest (not pictured) has been pecked/molted and has been lacking some feathers for months
-The last one, Irene, is fine. Possible pecking suspect?

-Overall, there is a lot of very watery poops in the yard. I researched this a bit, and it could be liver problems or excessive drinking due to hot weather. Any idea which it might be?

AHHHH I'm just kinda freaking out because I love my little babies and 3/4 have bare skin and look pitiful. HELP

 

[Blackberry18]

The feather problem could be caused by Feather Mites, mites that cause loss of feathers. The poop kind of looks like cecal poop, stinky, runny poop that is expelled every 8-10 poops, though I'm sure; yours looks darker. Try cooked white rice, see if that helps. Your birds could also be suffering from too little protein; they tend to pick and eat feathers to make up for protein loss. Check the feed to see if it has 16%-18% protein.

Hope they get better! Losing birds you love is very sad!