864 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



have been a second laying. On Tune 25th, when part 

 way down a cliff on the south side of the island, one of 

 these birds flew over my head and I heard its cry two or 

 three times. 



Phalacrocora.v graculus (Shag). 



Resident, and fairly plentiful, breeding both on the 

 main island and on Soar. There is an interesting 

 little colony of these birds nesting amongst boulders at 

 the base of the cliffs on the N."W. side of the main island, 

 which, at the time of my visit, consisted of about sixteen 

 pairs. There has at this spot been an enormous fall of 

 rock from the roof of a large cave, which has not merely 

 filled up the floor of the cave, but the boulders thus 

 formed, many of them of very large size, extend for some 

 distance beyond its mouth. It is beneath these largo 

 boulders and slabs of rock that the Shags breed, the nest 

 in every case being placed well under a large slab so as to 

 be completely roofed over. At the date of my visit, on 

 Tune 23rd, most of the occupied nests contained young 

 in different stages of growth, but two of them contained 

 fresh eggs in clutches of two and three respectively. As 

 the colony had been raided by the natives earlier in the 

 year several of the nests were empty. Another similar 

 nesting site beneath large boulders of rock occurs some- 

 what further to the west, opposite Miana Stack, but here 

 ilie colony is much smaller, and I only saw three or four 

 nests. 



Sula has sana (Gannet). 



This bird broods in onormons numbers in one locality 

 only of the group, viz., Stack Lii and Stack an Arniin, 

 and the adjoining cliffs on the west and north sides of 

 Boreray. It is not resident, leaving the rocks after the 

 young have flown, and is very rarely seen about in iho 



