Join Yahoo PETS Groups: LegBandNumbers - Mailing list to actively help find a breeder by their leg band codes.
Leg Band Registry - Database to find a breeder by their leg band on Pionus Parrot's Website
Cayaya Birding - Publications in Ornithology in Guatemala Distribution, variation, and conservation of Yellow-headed Parrots in northern Central America.
Birdalog.com - (formerly Pet Bird Express.com)
Rufkahrs Casters & Glides - Replacement casters for cages and stands
Carolyn Swicegood's series "The Kitchen Physician"
Feeding Feathers - Yahoo Group dedicated to parrot nutrition