BIRDS OF GUERNSEY. 173 



152. Great-crested Grebe. Podiceps cristatus, 

 Linngeus. French. " Grebe Imppe." — The Great- 

 crested Grebe is a regular autumn and whiter 

 visitant to the Channel Islands, but not, I think, 

 in quite such numbers as at Teignmouth and 

 Exmouth and along the south coast of Devon. I 

 have not shot this bird in the Channel Islands 

 myself, nor have I seen it alive : but I have seen 

 several Guernsey-killed specimens. These were all 

 young birds or adults in winter plumage ; and I 

 have one, a young bird of the year, killed in the 

 Guernsey harbour late in November, 1876. 



It is included in Professor Ansted's list, but only 

 marked as occurring in Guernsey. There is one 

 specimen, a young bird of the year, in the Museum. 



153. Great Northern Diver. Colymbusglacialis, 

 Linnaeus. French, " Plongeon imbrim." — The 

 Great Northern Diver is a common autumn and 

 winter visitant to all the Islands, arriving early in 

 November, perhaps even about the last week in 

 October. The earliest date at which I have seen 

 it myself was on the 9th November. A con- 

 siderable majority of these autumnal visitants are 

 young bu'ds of the year, the rest being adults in 

 winter plumage ; but, as is the case on the south 

 coast of Devon, a few occasionally remain so late 

 on in the spring as to have fully attained the 

 breeding-plumage. There is one Guernsey-killed 



