356 ALCAD.E, 



species of this genus, it is an open sea bird, frequenting the 

 rocks only for a limited period, during the season of incuba- 

 tion, and is seldom or ever found inland. It is local, re- 

 maining all the year in such situations as suit its habits. I 

 have seen this bird at the end of summer in Christchurch 

 Bay, on the Hampshire coast ; it is also occasionally pro- 

 cured on the coasts of Dorsetshire, Devonshire, and Corn- 

 wall. Pennant mentions that in his time it was known to 

 breed at several places on the coast of Wales. Mr, W. 

 Thompson includes it, at this time, among the resident spe- 

 cies of Ireland. Mr. J. Macgillivray says it is found on all 

 the rocky coasts of the islands of the Outer Hebrides, but 

 nowhere numerous ; and Montagu mentions that Mr. Henry 

 Boys saw both old and young in the month of August at 

 Fowlesheugh, near Stonehaven. On the coasts of Durham 

 and Northumberland Mr. Selby considers it a rare bird, but 

 it breeds upon the Isle of May, at the mouth of the Frith 

 of Forth, and was seen by some of the natural history party 

 in Sutherlandshire about the caves of the mouth of the 

 Durness Frith. Professor Macgillivray says " the Black 

 Guillemot sits lightly on the water, paddles about in a very 

 lively manner, dives with rapidity, opening its wings a little, 

 like the other species, and moves under water with great 

 speed." 



Mr. Salmon, in his notes on eggs and birds found in 

 Orkney in 1831, says, this species, which is there called the 

 Tyste, differs from the Common Guillemot, in not resorting 

 to the same spots for the purpose of incubation ; and its 

 principal place of breeding is upon a small holm, lying to the 

 eastward of Papa Westra, where it is very numerous, and 

 would scarcely move off the rocks when approached. In 

 every instance two eggs were invariably found together, and 

 they were deposited upon the bare ground, principally under 

 the large fragments of rocks scattered about upon the island, 



