410 Froceedings of the Royal Irish Academy. 



Sterna minuta, L., Lesser Tern. — Breeds on sea-beaches in 

 Donegal, Dublin, Wicklow, Wexford, Gralway, and Mayo, but in 

 mncb. smaller numbers than the t^o last species. 



Larus ridibundus, L., Black-headed Gull. — Has breeding colonies, 

 large and small, on bogs and on small islands in lakes, sometimes of 

 tens of thousands, as on Killeeumore Bog, near Tullamore, sometimes 

 of but a few pairs. Reported to breed in Donegal, Antrim, Down, 

 Ai'magb, llonaghan, Fermanagh, Cavan, "Westmeath, King's County, 

 Queen's County, Tipperary, Kerry, Limerick, Clare. Galway, Eos- 

 common, Mayo, and Leitrim. A few breed on Beginish, a small flat 

 island in the Blasquet group, an unusual instance of a marine 

 breeding-place (Turle, in His, for January, 1891, p. 10). 



Larus canus, L., Common Gull. — Breeds in small colonies, and 

 in separate pairs, on islands in lakes (usually near the coasts) of 

 Donegal, llayo, and Galway, but sometimes at a distance from the 

 sea, as on Lough Mask and Lake Dahybawn in Mayo, an island on 

 the latter containing a colony of some fifty nests. There are some 

 marine breeding-places, as on islands in Blacksod Bay, and a few 

 paii's breed on one of the Blasquet Islands, off Kerry. 



Larus argentatus, J. F. Gmelin, Herring Gull. — Breeds, often 

 in large numerous colonies, on the sea-cliffs and marine islands of 

 Donegal, Londonderry, Antrim, Dublin, Wexford, Waterford, Cork, 

 Keny, Clare, Galway, Mayo, and Sligo. It is the species of Gull 

 most abundantly distributed on our coasts in the breeding season. 



Larus fuscus, L., Lesser Black-backed Gull. — Breeds on sea-cliffs 

 in Donegal, Antrim, Dublin, Wexford, Cork, Kerry, Galway, and 

 Mayo, but it has much fewer colonies than the Herring Gull. Unlike 

 the latter it is found sparingly on inland lakes in the breeding season, 

 and has breeding colonies on Lough Erne, Lough Mask, and probably 

 on other lakes, also on bogs in Antrim and Galway. 



Larus marinus, L., Great Black-backed Gull. — One or more paii's 

 breed on the summits of some stacks and islands off Donegal, Dublin, 

 Wexford, Waterford, Cork, Kerry, Galway, and Mayo, but there is a 

 considerable colony on the Cow Bock, off Dursey Head, Cork (!New- 

 burgh in Field, 10th June, 1893), and another colony of at least fifty 

 pairs on the Bills Eocks, off Achill, Mayo. 



Rissa tridactyla (L.), Kittiwake. — Breeds, often in large colonies, 

 on the precipices of the coasts and islands of Donegal, Antrim, Dublin, 

 Wexford, Cork, Kerry, Clare, Galway, Mayo, and Sligo. 



Pufldnus anglorum (Temminck), Manx Shearwater. — Breeds on 

 headlands and islands of Donegal, Antrim, Dublin, Wicklow, Wex- 



