I'm not sure if you are talking about lice, or mites or maybe even pigeon flies. Either way you can get a permethrin based pigeon spray, and that will take care of all the above "critters".
Offer your bird a bathe, he will know when he needs one, and that helps keep the critter population down.
Scroll down to lice and mites:
http://www.auspigeonco.com.au/products/veterinary_medicines2.html
Offer your bird a bathe, he will know when he needs one, and that helps keep the critter population down.
Scroll down to lice and mites:
http://www.auspigeonco.com.au/products/veterinary_medicines2.html