The Birds of Pembrokeshire. 103 
BLACK TERN, “ydvochelidon nigra—Seen occasionally on its 
passage in the autumn. The Rey. Clennell Wilkinson has seen 
Black Terns flying over a large pool of fresh water on the 
Burrows in Castle Martin parish, and Sir Hugh Owen has shot 
it at Goodwick. Included in Mr. Mathias’ list. The Black 
Tern is a lacustrine species, and may often be met with flying 
over pools in salt marshes near the coast. In such places we 
have frequently seen it, the birds hawking about like large 
Swallows. 
KITTIWAKE, Rissa fridactyla. — An abundant resident. This 
pretty species is by far the most numerous of the Pembroke- 
shire Zavide. Great numbers nest on Ramsey, Skomer, and 
Grasholm Islands ; also in places on the cliffs of the mainland, 
as on cliffs at Flimstone, adjoining the Stack Rocks near Pem- 
broke, where there is a large colony, &c. A breeding station 
of the Kittiwake is a very interesting scene. On the ledges of 
the cliff nearest to the water, and rising tier above tier, the 
nests are thickly placed, and are constructed of seaweed lined 
with grass, and look white from the droppings of the birds. 
The Kittiwakes, sitting on the nests, look like white Doves, and 
the cries of the birds fill the air. The Kittiwake is a maritime 
species, and is never found away from the coast, unless it is 
blown inland by violent gales, and is never to be seen in com- 
pany with the Common and Brown-headed Gulls searching 
freshly-ploughed fields for worms. 
GLAUCOUS GULL, Larus glaucus. — A winter visitor; rare. 
Specimens of this splendid Polar Gull are occasionally obtained 
upon the coast. ‘here is a fine adult, with a white mantle, in 
the Stackpole collection, that was shot many years ago, near 
Tenby. In the winter of 1891, Mr. C. Jefferys, of Tenby, 
informs us that he several times saw a Glaucous Gull flying about 
in company with Herring Gulls. 
