The Birds of Pembrokeshire. XXXV. 
the cliffs, and may, or may not, have been nesting there ; it certainly 
looks as if they were.” He adds: “I believe the Chough still 
breeds at the back of Caldy, 7.2, on the Channel side; they did so 
some four or five years ago, and this spring (1893) I saw a pair 
flying about St. Margaret’s, having come from the direction of 
Caldy.” Mr. E. W. H. Blagg, who was visiting Tenby in the summer 
of 1887, tells us that he saw a large flock of Manx Shearwaters 
flying off Caldy on several evenings. 
II].—TuHE PEMBROKESHIRE LIGHT-HousES AND MIGRATION. 
Both in the St. George’s and Bristol Channels, and on either side 
of them, there are so many light-houses, some of them placed on 
rocks, or islands, miles out at sea, that they might well serve as 
points of direction to the passing flocks of migrating birds in the 
spring and autumn, helping them to their flight-lines ; while obser- 
vations made from them would be of the greatest service to ornitho- 
logists, as they would disclose what birds pass the county, the 
periods of their passage, and the duration of the movements of the 
respective species. For several years (from 1879-1887) a committee 
appointed by the British Association supplied the keepers of light- 
houses and light-ships around the British Isles with forms on which 
they might enter the various birds that were attracted by their lights, 
with the condition of the weather, and the directions of flight, fur- 
nishing those of the most important stations with copies of 
illustrated books on British birds, in order that they might identify 
the species that came under their notice. The annual reports that 
were compiled from the information forwarded from a large propor- 
tion out of the total number of light-houses contain most valuable and 
interesting matter, although they are necessarily somewhat fragmen- 
tary and incomplete; and have shed much light upon the wonderful 
seasonal movements of birds to and from our islands. We have 
carefully studied the reports from the Pembrokeshire light-houses, 
all of them well situated, the Smalls, in particular, from its position 
fifteen miles out at sea, in the centre of St. Bride’s Bay, where it 
is almost exactly opposite to the light-house on the Tuskar Rock, 
