Had a similar situation - one mourning hen who ended up on the sofa with me watching the news. Got her two companions who turned her into a deranged dictator but at least she wasn’t depressed anymore.
Lasted 48 hours till some sort of peace was established .
Hang In there !!
I’m a pretty new hen myself - just had 3 chicks and been annoying them by looking at their wing feathers to try and figure it out!
have 2 silkie chicks and 1 Buff Orpington chick.
I think first 2 are female because of the developed and in out flight feathers and one is male with only straight...
Same issue and mine has diarrhoea and a runny nose.
I gave her Net Tex poultrydrops for 3 days which perked her up for a few days but now she is back to the original state. Have started again on theNetTex. poo is bitty and liquidy. Any ideas?