The Inishkea and Duvillaun Islands are of ornithological interest for
their colonies of breeding seabirds and wintering geese. They
hold the second largest colony of Great Black-backed Gull in
Ireland (217 pairs during 1985-87). Other nationally important
colonies include Cormorant (185 pairs), Shag (30-50 pairs),
Fulmar (500 pairs), Common Gull (20-50 pairs) and Black
Guillemot (80 individuals). Large numbers of Herring Gull are
also found (300-400 pairs) (all figures are from 1981). Storm
Petrel occur on Duvillaun More (14 colonies in 1966, total
numbers are unknown, but probably at least 100 pairs).
The islands are also used as a wintering ground for
internationally important numbers of Barnacle Geese (420-450
individuals in 1988), which interchange with the largest Irish
population on the nearby Inishkea Islands.
Seagull, Dunlin and Common Snipe
The Peninsula is a port-of-call for migratory and wintering
birds. Half of the world’s population of an Gé Ghiúrainn (the
Barnacle Goose) comes to Inis Gé. The wetlands and the solitary
bays and islands again afford a substantial habitat. Birds to be
seen include an Scótar (the Common Scoter), an Cadban (the Brent
Goose), an Eala ghlórach (the Whooper Swan) and an Foitheach
cluasach (the Slavonian Grebe).