PSNZ Ring size identification chart Letter mm 28’s P 6 Abyssinian Lovebird M 4.4 Adelaide Parrakeet P 6 African Grey V 11 Alexandrine Parrakeet T 8 Bare-eyed Cockatoo V 10.5 Barnard’s Parrakeet P 6 Barraband’s Parrakeet P 6 Black Lory S 7.5 Black-capped Lory T 8.5 Black-cheaked Lovebird M 4.4 Black-headed Caique T 8.5 Black-wing Lory S 7.5 Blue and Gold Macaw X 14 Blue-bonnet Parrakeet N 5.5 Blue-crowned Hanging Parrot L 4.3 Blue-fronted Amazon 10.5 Blue-headed Pionus T 8.5 Blue-naped Parrot T 8.5 Blue-streaked Lory R 7 Blue-throated Cunure P 6 Blue-winged Grass Parrakeet L 4 Bourke’s Parrakeet L 4 Brown-headed Parrot R 7 Brown’s Parrakeet N 5.5 Budgerigar L 4 Buffon’s Macaw X 14 Buln Buln P 6 Canary-winged Parrakeet N 5.5 Cape Parrot U 9.5 Cardinal Lory S 7.5 Celestial Parrotlet L 5.5 Citron-crested Cockatoo U 9.5 "1 Letter mm Cockatiel N 5.5 Crimson Rosella P 6 Crimson-winged Parrakeet P 6 Cuban Amazon U 9.5 Derbyan Parrakeet U 9.5 Double Yellow-headed Amazon V 10.5 - 11 Double-eyed Fig Parrot N 5.5 Ducorp’s Cockatoo V 10.5 Dusky Lory S 7.5 Dusky Pionus T 8.5 Duyvebode’s Lory S 7.5 Eclectus Parrot V 10.5 Eclectus, Soloman U 9.5 Elegant L 4 Finsch’s Amazon U 9.5 Fischer’s Lovebird M 4.4 Galah U 9.5 Go#n’s Cockatoo U 9.5 Golden-capped Conure R 6.5 Golden-crowned Conure P 6 Golden-mantled Rosella N 5.5 Goldie’s Lorikeet N 5.5 Great-billed Parrot V 10.5 Greater Sulphur-crested V 12 Greater Vasa Parrot V 11 Green-Cheeked Amazon U 10 Green-Cheeked Conure P 6 Green-naped Lorikeet R 6.5 Green-winged Macaw X 16 Grey-cheeked Parrakeet P 6 Hahn’s Macaw S 7.5 Hawk-headed Parrot T 8.5 Hooded Parrot N 5 Horned Parrot N 5.5 Hyacinthine Macaw Y 16 "2 Letter mm Illiger’s Macaw T 8.5 Jardine’s Parrot U 9.5 Jendaya Conure R 6.5 Kakariki N 5.5 Kea V 11 King R 7 Leadbeater’s Cockatoo V Lesser Sulphur Crested Cockatoo U 9.5 Lesser Vasa Parrot U 9.5 Lilac-crowned Amazon U 9.5 Lilacine Amazon U 9.5 Little Lorikeet M 4.5 Long-billed Cockatoo V 10.5 Madagascar Lovebird L 4.3 Major Mitchell’s Cockatoo V Many-coloured Parrakeet N 5 Maroon-bellied Conure P 5.5 Masked Lovebird M 4.4 Maximilian’s Parrot U 9.5 Meally Amazon V 11 Mealy Rosella P 6 Meyer’s Lorikeet N 5.5 Military Macaw X 14 Moluccan Cockatoo X 14 Musk Lorikeet N 5.5 Musschenbroek’s Lorikeet N 5.5 Nanday Conure R 7 Northern Rosella N 5.5 Orange-flanked Parrakeet P 6 Orange-fronted Conure P 6 Orange-winged Amazon U/V 9.5 - 10.5 Pacific Parrotlet L 5 Painted Conure N 5.5 Palm Cockatoo V 12 Patagonian Conure, Lesser T 8.5 "3 Letter mm Peached-faced Lovebird M 4.4 Pearly Conure N 5.5 Pennant’s Parrakeet P 6 Perfect Lorikeet P 6 Petz’s Conure P 6 Philippine Cockatoo U 9.5 Pileated Parrakeet P 6 Plumhead Parrakeet N 5.5 Port Lincoln Parrakeet P 6 Princess P 6 Purple-crowned Lorikeet M 4.5 Quaker Parrakeet R 7 Queen of Bavaria’s Conure U 9.5 Rainbow Lorikeet R 6.5 Red Lory R 7 Red Rosella N 5.5 Red-bellied Conure P 5.5 Red-bellied Parrot R 6.5 Red-flanked Lorikeet M 4.5 Red-fronted Macaw V 12 Red-lored Amazon U 9.5 Red-masked Conure S 7.5 Red-tailed Black Cockatoo V 12 Red-vented Cockatoo U 9.5 Redrump Parrakeet N 5 Regent R 7 Ringneck Parrakeet R 7 Rock Pebbler R 7 Roseate Cockatoo U 10 Ruppell’s Parrot R 7 Salvadori’s Fig Parrot P 6 Salvin’s Amazon Parrot V 11 Scaly-breasted Lorikeet P 6 Scarlet Macaw X 14 Senegal Parrot R 7 "4 Letter mm Sever Macaw 10 Sierra Parrakeet M 4.5 Slender-billed Conure S 7.5 Spectacled Amazon T 8.5 Splendid Grass Parrakeet L 4 Stanley Rosella N 5.5 Stella’s Lorikeet P 6 Sulphur Crested Cockatoo W Sun Conure R 6.5 Swainson’s Lorikeet P 6.5 Swift Parrakeet N 5 Tritan Cockatoo V 11.5 Tucuman Amazon U 9.5 Turquoise Parrakket L 4.3 Varied Lorikeet N 5.5 Vernal Hanging Parrot L 4 Violet-necked Lory R 6.5 White-crowned Pionus S 7.5 White-eared Conure P 6 Yellow-backed Lory S 7.5 Yellow-bibbed Lory R 7 Yellow-collared Macaw T 8.5 Yellow-crowned Amazon 10.5 Yellow-faced Amazon U 9.5 Yellow-fronted Amazon 10.5 Yellow-naped Amazon V 11 Yellow-streaked Lory S 7.5 "5.