A lot of people leave just powdered charcoal out for them to pick at - some people even burn their own logs to make their own.
You can also use the liquid but I don't know the dosage.
Wow I have no idea.... you could try calling the poison control center or the manufacturer or an avian vet clinic? The only other thing I could think of would be to give activated charcoal, but that doesn't help in ever circumstance. I think it usually only works in the first hour after...