Schedule 1 Maximum ring sizes in relation to species of birds in Part 1 of Schedule 3 to the Wildlife and Countryside Act 1981
Original text. Later amendments are not shown.
| Common name | Scientific name | Maximum ring size (internal diameter, expressed in millimetres) |
| Blackbird | Turdus merula | 4.45 |
| Brambling | Fringilla montifringilla | 2.85 |
| Bullfinch | Pyrrhula pyrrhula | 2.85 |
| Bunting, Reed | Emberiza schoeniclus | 2.67 |
| Chaffinch | Fringilla coelebs | 2.67 |
| Dunnock | Prunella modularis | 3.10 |
| Goldfinch | Carduelis carduelis | 2.67 |
| Greenfinch | Carduelis chloris | 3.10 |
| Jackdaw | Corvus monedula | 7.15 |
| Jay | Garrulus glandarius | 6.32 |
| Linnet | Carduelis cannabina | 2.67 |
| Magpie | Pica pica | 7.15 |
| Owl, Barn | Tyto alba | 9.50 |
| Redpoll | Carduelis flammea | 2.55 |
| Siskin | Carduelis spinus | 2.55 |
| Starling | Sturnus vulgaris | 4.45 |
| Thrush, Song | Turdus philomelos | 4.26 |
| Twite | Carduelis flavirostris | 2.55 |
| Yellowhammer | Emberiza citrinella | 2.90 |