igi2. Pattkn. — Grasshopper-Warblers 07i Migration. 141 



and Sand-Martins were on the move, and examples of all these 

 species were collected at the lantern. I saw Corncrakes 

 in the rays, and I collected several on the rock next 

 morning. Despite the explosion of the fog-signal every 

 five minutes, which not only produces a terrific report but 

 actually blows to atoms numbers of birds which pass too 

 close to it, the stream of migrants this night was kept 

 steadily up till after dawn. My observations on the balcony 

 were considerably hampered because I had, for safety's 

 sake, to come in just before each shot was fired, but during 

 each interval of five minutes duration I was out again. 

 When I had secured a sufficient number of specimens 

 from those which had either struck or, having come to 

 the glass, had been " picked off " I started my search- 

 light perambulations, and lo ! perched on the long arm (or 

 "gib " as the light keepers call it) to the end of which is 

 attached the explosive, I espied a Grasshopper Warbler. 

 I had only about ninety seconds to net my bird before the 

 explosion was made, but I was successful in my attempt, 

 and indeed had I left the Warbler there where it was it 

 would have been blown to pieces by the explosive. The 

 " gib " was not on the leeward side but the wind had abated 

 considerably since last night and so the bird could stick 

 on its perch. 



The fourth and last specimen obtained during this year's 

 vernal migration at the Tuskar lighthouse lantern, was 

 sent to me very kindly by Mr. Glanville, principal keeper, 

 after I had returned to Sheffield. He secured it at 1.45 

 a.m. on May 4th, on a dark hazy night accompanied by 

 a gentle east wind. The bird was not obtained after 

 striking, i.e., it did not forcibly hit the glass and fall 

 stunned on the balcony, but was " picked off " the glass of 

 the lantern immediately on coming in contact with it. With 

 it were sent Sedge -Warblers, Whitethroats, Wheatears and 

 Willow-Warblers. In addition to the foregoing Grass- 

 hopper-Warblers obtained on their vernal migration as 

 they immigrated to Ireland, I also procured a Grasshopper- 

 Warbler during the autumnal migration, on the night 

 of September i6th, 1911. It came to the lantern quite 

 slowly and was secured as it fluttered against the glass. 

 Emigrating with this species were the following : — Greater 



