# The Ringing of Certain Captive-bred Birds (England and Wales) Regulations 2017, Schedule 1: Maximum ring sizes in relation to species of birds in Part 1 of Schedule 3 to the Wildlife and Countryside Act 1981


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

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Source: https://www.legislation.gov.uk/uksi/2017/1213/schedule/1 (the official version)
Page: https://openlegislation.uk/ringing-of-certain-captive-bred-birds-england-and-wales-regulations-2017/schedule-1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.