"This is due to competition from the gray squirrel, which was first introduced into Ireland in the early 20th century and has been spreading ever since," he said in a statement.
"It is antagonistic to the red squirrel; once it colonizes an area, the native species is pushed out. Not only is the gray squirrel taking over from the red, it is also causing very serious damage to a wide range of broadleaved trees, including native oak, by stripping off the bark in search of food."
Browne said scientists from a number of state bodies and universities will be involved in the pilot project and it is hoped it will lead to recommendations for a national management strategy for the gray squirrel.
"A strong feature of the work program will be the direct input of forest owners, all of whom will gain valuable knowledge on best management practice in controlling the gray squirrel," Browne said.
The first gray squirrels to arrive in Ireland are thought to have been six pairs imported from England in 1911 as a wedding gift. They were released into woods in County Longford in the north midlands.
The Irish red squirrel is slightly smaller than its gray cousin. It builds a nest known as a drey, but does not hibernate during the winter. It is a protected species under the 1976 Wildlife Act.
Name: Eurasian Red Squirrel (
Sciurus vulgaris)
Primary Classification: Sciuridae (Squirrels)
Location: Europe and northern Asia
Habitat: Evergreen and deciduous forests, preferring large, mature trees
Diet: Conifer cones, seeds, acorns, hazelnuts, chestnuts, beech flowers, fungi, sap, berries, caterpillars, bird eggs and fruit
Size: Averages 13 to 18 inches in length, including the tail, and up to 16 oz in weight
Description: Ginger, red, brown or black fur; white belly; strong teeth; thick, fluffy fur and large ear tufts in winter; long, sharp claws; long, bushy tail
Cool Facts: It waves its bushy tail back and forth when angry. Its coat color varies more than almost any other mammal in the Palearctic region.
Conservation Status: Near Threatened
Major Threat(s): Habitat fragmentation and competition with introduced gray squirrels
What Can I Do?: Visit
The Wildlife Trusts for information on how you can help.