Scientific: Tetrao tetrix

Cymraeg: Grugiar Ddu

Close to extinction as a breeding species, the few post-1980 sightings being from northern forest areas.

1983
Twos and threes seen in plantation near Ffarmers.

1984
A few in plantations, near Ffarmers, May. Male, Gwenffrwd Reserve, May.

1985
6+, near Cynghordy, 8 December.

1986
A small lek in the north of the county, 1 May.

1987
2, Upper Cothi Valley, November.

1988
Small numbers, near Rhandirmwyn

1989
Sightings by forestry workers involving small numbers on the verges of a northern forest.

1990
Female seen in one locality.

1992
A lone male was seen in a northern forest area.

1998
There were 3 sightings of a female at an upland forestry site between 7th – 12th November. These were the first records since 1992.

1999
Site A contained 1 male and a chick; Site B, 1 adult and 1 chick.