Zoology In Down
Zoology
The lacustrine avifauna of Ulster is important, as the large lakes, such as Lough Erne and Lough Neagh, have an abundant bird population. Among the breeding species arc the Tufted Duck, (now widespread), Shoveller, (increasing) ; Common Scoter, (recently found breeding on Lough Erne) ; Red-breasted Merganser (frequent; also on marine islands) ; several species of Gulls and Terns; Oyster-catcher (breeding on Lough Neagh) ; Great Crested Grebe, (frequent) ; and Red-throated Diver (one breeding station).
In Down, the fine-grained granites from the southern end of the Mourne mountains are exceptionally good. In the north of Co. Down (Hotels, Down, Ireland) Silurian grits and basalts are much used for the roads, and at Bally- gowan fine-grained dark grits 
are made into setts, which are much used in Belfast. Setts are also made from basalt at Dundonald.