Great antibiotic, thank you for selling it on ebay.
My parakeet was really sick with a respiratory infection and we didn't want to lose him. We followed the directions and started him on the doxycycline added to 8 oz of filtered water for him and he drank it. We continued the medication for 5 days and he got better. Then we bought a bird probiotic at the pet store and are giving him that to help his stomach heal from the doxycycline, along with pedialyte. The important thing when treating a bird for respiratory infection is to keep him really warm, they suggest 85 to 90 degree room. A bird can die quickly when it's cold.
I have used this on my birds before...it works great and any of my birds that i gave this too drink it without any prolbems,so it must have a good or no taste to it.This is always good to have on hand in case your birds get sick from stress,illness,etc. Much more cheaper to purchase this than going to the vet