5 canlyniad
Rhestrir y canlyniadau yn ôl perthnasedd.
Cymraeg: modrwyo trwynau
Saesneg: nose ringing
Saesneg: The Ringing of Certain Captive-bred Birds (England and Wales) Regulations 2017
Cymraeg: Rheoliadau Bywyd Gwyllt a Chefn Gwlad (Cofrestru, Modrwyo a Marcio Adar Caeth Penodol) (Cymru) 2003
Saesneg: The Wildlife and Countryside (Registration, Ringing and Marking of Certain Captive Birds) (Wales) Regulations 2003
Cymraeg: Rheoliadau Bywyd Gwyllt a Chefn Gwlad (Cofrestru, Modrwyo a Marcio Adar Caeth Penodol) (Cymru) 2011
Saesneg: The Wildlife and Countryside (Registration, Ringing and Marking of Certain Captive Birds) (Wales) Regulations 2011
Saesneg: The Wildlife and Countryside (Registration, Ringing and Marking of Certain Captive Birds) (Wales) (Amendment) Regulations 2009