SPURN AND ITS BIRDS. 
59 
Spurn light were fixed, and not revolving, still greater mortality 
would result, but the movement as at present gives warning of 
danger which a great many birds seem to comprehend and 
respond to. On October 181h, 1908, 650 birds were picked up 
dead, having struck the lantern ; and in the following week, Oct. 
2 51h, 537, close on 1200 birds in two nights—a record slaughter. 
All along our coasts where systematic observations have been 
made, it has been noticed that great rushes or waves of migration 
are nearly always heralded by small parties of tiny Golden-crested 
Wrens, and Spurn experience tells the same tale. 
The whole subject of migration is a most fascinating one, and 
nowhere perhaps in the British Isles can one see so much of it (if 
one has luck) as at Spurn. 
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