4(U THE ZOOLOGIST. 



* Arctic Tern, S. hirundo, Linn.— Common along the coast, 

 and breeds on islets off the north coast of Donegal in great 

 numbers. 



*Lesser Tern, S. minuta, Linn. — Frequents the shores of 

 Lough Swilly, and breeds, no doubt, in several places. I have not 

 succeeded in finding their eggs here, though I was undoubtedly 

 amongst them in two or three places. 



*Black-headed Gull, Larus ridibundus, Linn. — Breeds 

 abundantly at Gartan Lough, Churchill ; on an island in Kinny- 

 lough, Fanet; on an islet in a lake near Mount Charles ; and 

 elsewhere. " In great quantities on an island in Lough Eske" 

 (A. B.). 



Kittiwake, L. tridactylus, Linn. — Breeds abundantly, and 

 very common at that season. Horn Head is its most notable 

 station. 



*Common Gull, L. canus, Linn. — Frequent inland in winter ; 

 a few pairs breed on an island in Lough Fern. 



*Herrino Gull, L. argentatus, Gmel. — Very common all 

 round the coast, breeding everywhere, but never in crowds, like 

 the Kittiwake. At Horn Head they have their own colonies of 

 thirty to fifty pairs, where no other birds interfere. Often they 

 breed along the coast, a pair or two at a place. 



Iceland Gull, L. leucopterus f Faber. — One of these graceful 

 gulls flew up Lough Swilly past my house in a heavy gale from 

 W.N.W. on Jan. 20th, in the present year. He passed close to 

 me, and the flight was very powerful. The long tern-like wings 

 and the gleaming white colour, coupled with the size, intermediate 

 between Kittiwake and Herring Gull, rendered it unmistakable. 

 I was, moreover, familiar with this bird in Greenland. 



*Greater Black-backed Gull, L. marinus, Linn. — A few of 

 these birds are generally to be seen in Lough Swilly, especially 

 when fish are in. Breeds at Horn Head, and I have seen these 

 birds at Slieve League and Dunaff Head, and in other places 

 along the coast in the breeding-season. " I was told by Mr. J. 

 Young that a pair bred on Lough Eske [inland lake] one year, 

 and I have seen a pair at Innisduff island [maritime] in the 

 breeding season" (A. B ). With reference to the freshwater 

 breeding-place, I may mention here tha.t about thirty years ago 

 Great Black-backed Gulls used to breed on islands in Lough 

 Erne. 



