BIBD8 OBSERVED ON THE CALF OF MAN. 471 



in the interior, and probably comparatively more numerous here than 

 on the main island. 



Oysteecatcher (Hmnatopus ostralegus). — Common round the coast, 

 especially among the low-tide rocks of the Sound. A pair were evi- 

 dently nesting on the rough grassy land near the small pond where the 

 Sheld-Ducks were, and we saw some eggs which had been taken shortly 

 before on the turfy margin of the rocks. 



Hereing-Gull (Lams argentatus). — The dominant bird of the Calf. 

 Nests in abundance almost all round it, sometimes on the hill- sides at 

 a little distance back from the cliff, but not in the interior of the islet. 

 On the southern promontories, where the turf consists chiefly of sea- 

 pink, the nests were large brown structures formed of the torn-up tufts. 

 Most nests had three eggs or newly-hatched young. In one were a few 

 mangled beetles (Carabus nemoralis, Barynotus elevatus), and in another 

 some small worms, evidently intended for the first food of the young. 



Lesser Black-backed Gull (L./uscus). — Numbers with L. argen- 

 tatus in certain places, but not so well distributed. Some of their nests 

 had many feathers mixed with the structure. We did not identify any 

 nests with young as belonging to this species, which lays later than the 

 Herring-Gull. Numbers breed on the isolated Burrow and Stack. 



KiTTiwAKE [Fiissa tridactyla), — One colony, not large (described 

 Zool. 1894, p. 166). Laying had not yet commenced, though the 

 birds spent much time in unfinished nests on little ledges and projec- 

 tions of the sheer cliff. 



Eazorbill {Alca torda). — Well distributed and abundant, but does 

 not crowd to the same extent as the next species. Some eggs seen. 



Common Guillemot [Uria troile). — Very abundant at Kione Rouayr, 

 and on the western cliffs, on narrow ledges. They lay later than the 

 Razorbill, and we noticed no eggs. 



Puffin [Fratercida arctica). — In places there are large colonies, as 

 at Kione Rouayr, and among rock-rubbish under the western cliffs. In 

 May the Puffin was not very much in evidence, though we saw some 

 carrying straws and other nesting material ; but when Ealfe again visited 

 the Calf, on July 5th, it was astonishingly numerous and tame. 



