142 Bird-migration at the Kentish Knock Lightship. 



43. Stercorarius crepidatds. Richardson's Shin. 

 Present daily from Sept. 24th onwards, chiefly engaged 



in bullying the Kittiwakes and sometimes the Lesser Black- 

 backed Gulls. The dark form largely preponderated. 



44. Fulmarus glacialis. Fulmar. 



On Oct. 2nd at 5.45 p.m. one was observed flying south- 

 wards. 



ID. Coltmbus septentrionalts. Red-throated Diver. 

 Both adults and young were seen not unfrequently, hut 

 always singly, fishing near the ship. 



10. Lomvia troile. Common Guillemot. 



Not uncommon oft' the edge of the sand, where the shallow- 

 water probably affords good fishing-ground. These birds, 

 and others seeking similar situations, were most numerous 

 during strong westerly winds, when the east side of the sand 

 afforded shelter and the possibility of obtaining food. 



47. Alca torda. Razorbill. 



The same remarks apply to this species as to the last. 



IX. Fkatercula arctica. Puffin. 



A single bird seen on the wing on Oct. 10th was the only 

 record. 



In conclusion, I wish again to tender to the Elder Brethren 

 of the Trinity House my most sincere thanks for the great 

 privileges which they so generously granted to me, and for 

 the facilities placed at my service for carrying out the investi- 

 gation. I wish also to thank Prof. Newton, Sir Michael 

 Foster, and Captain Browne for much assistance and advice; 

 and to record my obligations to Mr. E. Leborgne, the 

 Officer-in-CMiarge of the lightship, and his excellent crew 

 for many kindnesses and for services rendered, which con- 

 tributed materially to my comfort and to any success that 

 1 uiav have achieved. 



