Cockatoo Family, Genus, Species Charts - Carol Highfill; Cockatoo Heaven
Cockatoo Talk (Major Mitchell, Red-tailed Black and Gang-gang) - Klaus Sietus; PSA
Cockatoos Need For Attention - Carol Highfill and Bobbi Brinker; Cockatoo Heaven
Gang Gang Cockatoos - Mike Owen; Birds n Ways
Gang Gang Cockatoos - John McGrath; PSA
A Major Event (Breeding Major Mitchells) - Steve Groom; PSA
Major Mitchell (Leadbeater's) Cockatoos - Mike Owen; Birds n Ways
Mate Aggression in Cockatoos - Various Breeders; Cockatoo Heaven
Results of Too Small Cages - Laurie Cestnick
Sulphur Crested Cockatoo Species - Sandra Dobbs and Carol Highfill; Cockatoo Heaven
Umbrella Cockatoo Species - Carol Highfill; Cockatoo Heaven