Avian flu has been found in a flock of captive birds in north Dublin, according to the Department of Agriculture, Food and the Marine.
The outbreak confirmed at the weekend is the first to be detected in non-wild birds since December of last year.
It was discovered in a flock that is located close to a coastal area in Sutton where HPNI, avian influenza, had already been confirmed among seabirds.
The case is not in a poultry flock and has not led to extra restrictions being imposed on local poultry owners.
The department said it is contained in a relatively small flock of kept birds and, following a risk assessment by officials, there is deemed to be a "negligible risk of transmission".
However, all bird owners, including poultry owners, have been urged to continue to be vigilant regarding bio-security and for signs of disease in their flocks.
Meanwhile, the department said that, of 80 birds sent to it for testing for possible bird flu since July, 61 have been confirmed positive.
All but one were in seabirds and these came from 17 different coastal counties, confirming that the disease is circulating widely in the wild bird population.
"This reservoir of infection in wildlife poses a risk to our poultry flocks and industry," a department spokesman said.
Anyone who comes across a dead or sick wild bird is advised not to handle it, but to report to their regional veterinary office or the department's disease helpline on 01 4928026.
The H5N1 sub-type of HPAI, which is the strain currently in circulation, can cause serious disease in poultry and other birds.
No human infections have been reported anywhere in the EU and the risk is considered to be "very low" to humans.
"Properly cooked poultry and poultry products, including eggs are safe to eat," the department said.
Among seabirds, the gannet population is reported to be particularly susceptible to avian flu and gannets are the birds who have been hit by the disease so far this season.
BirdWatch Ireland spokesman Niall Hatch said that with thousands of migratory waterfowl and wading birds set to arrive into Ireland in the coming weeks, they will be keeping a close eye on key wetland sites.
"A big fear is that the disease could spread to these birds and have a devastating effect on them."
