2 pounds 10 ounces is 1200 grams. If she were mine, I would give 40 ml warmed Pedialyte or Gatorade now, wait 60-90 minutes, then repeat. Depending on how her poop looked, I might do it again in two hours.
Once she's had 80-120 ml of oral fluids, I would start tubing Kaytee. Start off by mixing...
@Gotalotofpetstoo, you mentioned having lactated ringers. Does this mean you know how to give subcutaneous fluids to cats, dogs, or other animals? If so, you are capable of giving them to your chicken.
Step 1:
Bring bird inside and place in a warm room, 80-85 degrees is ideal (watch for signs of over-heating).
Step 2:
Weigh the bird
Step 3:
Once warmed, correct hydration, and this should not be done until the bird is warmed up. Tube warmed (102 degrees) Pedialyte or Gatorade at 10-14 ml per...