Vigilance has been urged after confirmation of the first case of Avian flu in Northern Ireland.
A wild swan, found in County Londonderry, near Lough Beg, has tested positive for H5N8 avian influenza.
The swan was reported to the Department of Agriculture by a member of the public as part of the department's Avian dead wild bird surveillance programme, and was submitted for testing at the Agri-Food and Biosciences Institute, where initial testing has indicated the prescence of Avian influenza, sub-type H5N8.
This finding follows the extension of a Prevention Zone in Northern Ireland until March, 16 2017, which requires all keepers of poultry and other captive birds to keep their birds indoors, or take appropriate steps to keep them separate and protect them from wild birds
Chief Veterinary Officer, Robert Huey, said it is possible that more cases will be confirmed and urged vigilance.
Members of the public are encouraged to report dead waterfowl (swans, geese or ducks) or gulls, or five or more dead wild birds of other species in the same location, to the DAERA helpline on 0300 200 7840, Mon-Fri 9am to 5pm).