75-110g birds. Example: Cockatiels, Green Cheek Conures, Kakariki Parakeets

190-425g birds. Example: Blue-fronted amazon, Timneh Grey, Pionus, Galah Cockatoo

110-190g birds. Example: Hahn´s macaw, Quakers, Senegals, Caique

425-600g birds. Example: Congo Grey, Umbrella Cockatoo, Eclectus, big Amazons

600-1000g birds. Example: Blue and Gold Macaw, Moluccan Cockatoo, Scarlet Macaw