Oh poor baby!!! Hopefully with treatment, he'll be able to fully recover. Just be careful, because I believe chlamydia is one of those bird diseases that can transfer to humans. If you have any pregnant woman or sick person in the house, advise them not to deal with the bird's droppings etc. until he recovers. Hopefully all will be well, but just be sure to take precautions. I'll be praying for your bird, and for you. Keep us updated.

http://www.avianbiotech.com/diseases/chlamydia.htm