I found this information on Poultry Matters, it sounds alot like what you might be looking for! Welcome to BYC, by the way! Praying for your birds!
Symptoms of poisoning with an anticoagulant rodenticide:
* Any signs of abnormal or prolonged bleeding
* Could see bleeding around the nostrils
* Depression
* Laboured or noisy breathing (poisoned birds will frequently bleed into the lungs)
* Possible bruising seen on the skin.
Treatment (vet required):
Minimise stress which will increase bleeding into the lungs.
Give 2mg/kg water-soluble vitamin K, I.M. and 20mg/kg prednisolone succinate IM. Immediately place the bird in a dark environment heated to approximately 80 to 85 degrees F and do not check or disturb for at least two hours. Repeat treatment every four to eight hours until the bird is stable. Once the bird is stable, measure the time it takes for the blood to clot in a nonheparinized capillary tube. Continue supplementation by giving a multivitamin preparation that contains vitamin K in the drinking water.
Note: In some cases the birds can be too stressed to attempt intravenous therapy.
Summarised from: Harrison & Harrison (1986) Clinical Avian Medicine and Surgery.