The following size charts are provided as a suggested guide only. We suggest you research the species before making a decision on the size leg band you use.
| BIRD |
BAND SIZE | MOST USED | Metric Size (inside) |
| African Grey Parrot | 14 or 16 | 14 | 11mm or 13mm |
| Alexandrine Parakeet | 10 or 11 or 12 or 14 | 12 | 10mm |
| Bare-Eyed Cockatoo | 12 or 14 | 14 | 11mm |
| Blue & Gold Macaw | 16 or 18 or 20 | 18 | 14mm |
| Blue Crown Conure | 10 or 11 or 12 | 10 | 8mm |
| Blue Front Amazon | 14 or 16 | 14 | 11mm |
| Bourke’s Parakeet | 9/64 or 5/32 | 9/64 | 4mm |
| Brown Throat Conure | 9 or 9-1/2 | 9 | 6.5mm |
| Budgerigar | 9/64 | 9/64 | 3.5mm |
| Caiques | 10 or 11 or 12 | 10 | 8mm |
| Canary | 7/16 | 7/16 | 3mm |
| Chattering Lory | 10 or 11 or 12 | Equal | 9mm |
| Cherry Head Conure | 10 or 11 or 12 | 10 | 9mm |
| Citron Cockatoo | 12 or 14 | 14 | 11mm |
| Cockatiel | 7/32 | 7/32 | 5.5mm |
| Double Yellow Head Amazon | 14 or 16 | Equal | 11-13mm |
| Derbyan Parakeet | 10 or 11 or 12 | Equal | 10mm |
| Diamond Doves | 10 or 11 or 12 | Equal | 8-10mm |
| Eclectus | 14 or 16 | 14 | 11mm |
| Fig Parrot | 7/32 | 7/32 | – |
| Goffins Cockatoo | 12 or 14 | Equal | 10mm |
| Gold Capped Conure | 9 | 9 | 6.5mm |
| Goldies (small lory) | 3/16 | 3/16 | – |
| Great Billed Parrot | 12 or 14 or 16 | Unknown | 11mm |
| Golden Conure | 12 or 14 | 12 | 9-10mm |
| Greater Sulfur Cockatoo | 16 or 18 | Equal | 13mm |
| Green Cheek Conure | 8 or 7/32 | Equal | 6.0mm |
| Green Cheeked Amazon | 14 or 16 | 14 | 11mm |
| Green Naped Lory | 9 | 9 | – |
| Greenwing Macaw | 18 or 20 or 22 | 20 | 14-16mm |
| Grey Cheek Parakeet | 3/16 or 7/32 | 7/32 | – |
| Hahns Macaw | 10 or 11 or 12 | 10 | 8mm |
| Halfmoon Conure | 9 or 7/32 | Equal | 6.5mm |
| Hawk Headed Parrot | 12 or 14 | 12 | 10mm |
| Hyacinth Macaw | 20 or 22 or 24 | 20 or 22 | 16-17mm |
| Indian Ringneck Parakeet | 9 or 9-1/2 or 10 | 10 | 6.5-7mm |
| Jardine | 10 or 11 or 12 | 12 | 10mm |
| Jenday Conure | 9 or 9-1/2 or 10 | 9-1/2 | 7mm |
| Kakarikis | 3/16 or 7/32 | 3/16 | 4mm |
| Lesser Sulfur Cockatoo | 12 or 14 | Equal | 10mm |
| Lilac Crown Amazon | 14 or 16 | 14 | 11mm |
| Lovebird | 3/16 | 3/16 | 4.5mm |
| Maroon Belly Conure | 9 or 7/32 | 7/32 | 6.5mm |
| Mealy Amazon | 14 or 16 | 14 | 11mm |
| Med. Sulfur Cockatoo | 14 or 16 | 14 | 11mm |
| Mexican Redhead | 14 or 16 | 14 | 11mm |
| Meyers | 9 or 9-1/2 or 10 | 10 | 8mm |
| Military Macaw | 16 or 18 or 20 | 18 | 13-14mm |
| Mitred Conure | 10 or 11 or 12 | 12 | 9mm |
| Moluccan Cockatoo | 16 or 18 or 20 | 18 | 14mm |
| Moustache Parakeet | 9 or 9-1/2 or 10 | 9 | 6.5mm |
| Nanday Conure | 9 or 9-1/2 or 10 | 10 | 8mm |
| Noble Macaw | 10 or 11 or 12 | 10 | 8mm |
| Orange Wing Amazon | 14 or 16 | 14 | 11mm |
| Panama Amazon | 16 or 18 | Equal | 13mm |
| Parrotlet | 9/64 or 5/32 or 3/16 | 5/32 | – |
| Patagonian Conure | 10 or 11 or 12 | 12 | 10mm |
| Peach Front Conure | 9 | 9 | 6.5mm |
| Pionus | 10 or 11 or 12 | 11 | 9mm |
| Plum Head Parakeet | 9 or 7/32 | 7/32 | 6.5mm |
| Princess of Wales Parakeet | 9 or 9-1/2 or 10 | 9 or 9-1/2 | 6.5mm |
| Quaker (Monk) Parakeet | 9 or 9-1/2 or 10 | 9-1/2 | 7mm |
| Rainbow Lory | 9 or 9-1/2 or 10 | 9-1/2 | 7mm |
| Red Belly Parrot | 9 or 9-1/2 or 10 | 10 | 8mm |
| Red Fronted Conure | 10 | 10 | 8mm |
| Red Fronted Macaw | 14 or 16 | 16 | 13mm |
| Red Lored Amazon | 14 | 14 | 11mm |
| Red Lory | 10 or 11 or 12 | 10 | 8mm |
| Red Rump Parakeet | 3/16 or 7/32 | Equal | 4mm |
| Ringneck Dove | 17/64 | 17/64 | – |
| Rock Pebbler | 9 or 9-1/2 or 10 | Equal | 6.5-7mm |
| Rose Breasted Cockatoo | 12 or 14 | 12 | 10mm |
| Roller Pigeon | 17/64 | 17/64 | – |
| Rosella | 9 or 9-1/2 | Equal | 6.5-7mm |
| Scarlet Macaw | 18 or 20 | 18 | 14mm |
| Senegal | 9 or 9-1/2 -or 10 | 10 | 8mm |
| Severe Macaw | 12 or 14 | 14 | 11mm |
| Spectacled Amazon | 12 or 14 | 12 | 9mm |
| Sun Conure | 9 or 9-1/2 or 10 | 9-1/2 | 7mm |
| Timneh Grey Parrot | 12 or 14 | 14 | 10-11mm |
| Triton Cockatoo | 16 or 18 | Equal | 13-14mm |
| Turquoisine Parakeet | 9/64 | 9/64 | 4mm |
| Umbrella Cockatoo | 14 or 16 or 18 | 16 | 13mm |
| Violet-Necked Lory | 9 | 9 | 6.5mm |
| White Front Amazon | 12 or14 | 14 | 10mm |
| White-Eye Conure | 10 | 10 | 8mm |
| Yellow Collar Macaw | 10 or 12 or 14 | 12 | 10mm |
| Yellow Crowned Amazon | 14 | 14 | 11mm |
| Yellow Naped Amazon | 14 or 16 | Equal | 11-13mm |