Mae’r Parth Atal yn galw am roi cywion ieir dof, ieir, tyrcwn a hwyaid dan do ar unwaith, ac mae hyn yn orfodol. Os nad yw hyn yn ymarferol, rhaid sicrhau gwahanu llwyr oddi wrth gyswllt ag adar gwyllt.  O ran gwyddau, adar hela ac adar caeth eraill sy’n cael eu ffermio, dylai’r ceidwaid gymryd camau ymarferol i gadw’r adar hyn ar wahân i adar gwyllt.
The Prevention Zone requires the immediate and compulsory housing of domestic chickens, hens, turkeys and ducks, or where this is not practical, their complete separation from contact with wild birds. For farmed geese, gamebirds and other captive birds, keepers should take practical steps to keep these birds separate from wild birds.