OndthuJogij of Si. Kilda. 361 



entering- the holes and remaining there for some time. My 

 statement that it never breeds on St. Kilda will perhaps have 

 to be modified. 



Ardea cinerea. 



A Heron visited the island of St. Kilda last winter, but 

 soon died from want of food. 



Crex pratensis. 



The Corn-Crake was very common in the islands last 

 autumn on migration ; Mr. Campbell obtained an example. 

 The St. Kilda name for this bird is " Trieu." 



Cygnus, sp. ? 



Two Swans visited the island last winter, and one of them 

 died for want of food ; but unfortunately its skin was not 

 preserved, so that the speeies is still undetermined. 



COLYMBUS GLACIALIS. 



Mr. Mackenzie informs me that he shot an iamiature 

 example of this species. He says that there were several 

 swimming along with the Eiders in the bay ; but that, owing 

 to the heavy sea, he was unable to recover his prize until it 

 had been so mutilated by the Great Black-backed Crulls as 

 to be worthless for preserving. 



Fratercula arctica. 



Mr. Mackenzie writes : — " The natives told me a very 

 curious thing about the Puffin. They said that these birds 

 never breed except on the weather sides of the islands." 



PUFFINUS ANGLORUM. 



Mr. Mackenzie was informed that the Manx Shearwater 

 is in the habit of diving and taking the baits off the long 

 lines, in a similar manner to the Fulmar, as already men- 

 tioned in my former paper. 



Thalassidroma leucorrhoa. 



Mr. Mackenzie obtained two nests of the Fork-tailed Petrel 

 on the island of Doon ; but he was too early for the regular 

 breeding-season, which generally commences about the 

 second week in June. 



