Bydd y Parth Atal Ffliw Adar newydd yn ei le rhwng 28 Chwefror a 30 Ebrill, a bydd yn ofynnol i bob ceidwad yng Nghymru sefydlu mesurau bioddiogelwch gorfodol a chynnalhunanasesiad o fesurau bioddiogelwchar eu safleoedd. Ar ôl iddynt wneud hynny, dylent fabwysiadu un neu fwy o'r mesurau a ganlyn (i) cadw eu hadar dan do, (ii) eu cadw'n gyfan gwbl ar wahân i adar gwyllt, drwy ddefnyddio netin etc neu (iii) rheoli  mynediad eu hadar i ardaloedd allanol, ar yr amod eu bod yncyflwyno mesurau ychwanegol i reoli risg.
The new Avian Influenza Prevention Zone, which will be in place from 28 February to 30 April, requires all keepers in Wales to put in place mandatory biosecurity measures and complete aself assessment of biosecurity measureson their premises. Following this, keepers should then adopt one or more of the following: (i) house their birds, (ii) keep them totally separate from wild birds, by use of netting etc or (iii) allow controlled access to outside areas, subject to applyingadditional risk mitigation measures.