Your RR hen is in crisis. Putting it all together, (this from my own archives on file)
1. Bright green bile =
advanced anorexia, (that is to say not eating normally), possibly liver strain or bile reflux from not eating. Probably not eating for some time because she is passing bile bright green that has not been acted on by gizzard. 2.
Weight loss & pale comb, severe anemia, maybe from internal parasites, infection, or some degree of organ stress, calcium dumping or no calcium eaten. 3.
Droopy, weak, not eating, systemic infection.
You need to do some
triage fast. Try to diagnose, then support, then treat. You've done a lot already, but some of it may be too gentle or misfired for the stage she's got herself in.
Diagnosis?
In this state she's in, we can’t waste time, here’s what it might be:
Worm overload not cleared by ivermectin (resistant strains like
Capillaria or
Heterakis possible)
Histomoniasis/Blackhead (especially since green poop, from liver stress)
Coccidiosis (you used Corid, but was it dosed right? Needs full-strength course)
Do-NOW Action Plan (Stabilize, THEN treat)
1.
Stabilize Her Metabolism. Here we start saving her life:
Fluids: Syringe
electrolyte water, small sips every 30–60 min. If not self-drinking then eyedrop or syringe dosing. Add electrolytes and energy:
-1 pinch baking soda
-1 pinch salt
-1 tsp molasses or sugar or honey
Optional: 1 drop polyvisol (no iron) or baby B-complex
Keep Warm, if not warm enough: 85–90°F brooder-like space minimum. Cold stress = higher risk of mortality.
Stimulate Appetite Gently:
*
Dilute cooked egg yolk in water or electrolyte water
*Gerber chicken baby food (syringe if necessary)
*Sprinkle with
Nutri-Drench or similar metabolic support
You can
Shave, wash with epsom salt soak or trim caked feathers, but not too deep cuz it will cause bleed. Trim carefully. Do
not pull them. Go easy. Use
blunt-tip scissors, and only cut the crusty tips.
Soak any hard masses first in warm water + mild soap (dish soap could cause more irritation, but if dilute will be ok for now-or Epsom salt). Be
VERY gentle around vent, looks it may be inflamed or infected.
Worms:
Ivermectin won’t clear many intestinal worms. Use
Fenbendazole (SafeGuard 10%):
*
Dose: 0.23 mL per pound orally for
5 days
*Repeat after 10 days
*Make sure she drinks since dehydration + deworming can cause lots of problems even, I'm sorry to say, death.
If You Suspect Coccidiosis:
Corid (amprolium) dosage for treatment.
*
2 tsp per gallon of water for
5–7 days
*No vitamins during treatment—Corid blocks thiamine pathways.
* BUT after treatment, resume
B1-rich support.
Check on These Signals
*More yellow/green poop = liver or bile congestion
*Black, tarry poop = internal bleeding
*Sweet or foul breath = systemic infection
*Crop not emptying = sour crop (needs antifungal support)
