A sixth case of bird flu in a wild bird in Ireland since last year has been confirmed in Nenagh, Co Tipperary.
This latest case is in a whooper swan.
It follows three previous cases in whooper swans this year, with two cases in Eurasian wigeons in December.
In December, the Department of Agriculture activated regulations requiring all poultry and captive birds to be kept within a secure building amid concerns over bird flu.
The public is advised not to handle dead or sick birds.