114 The Birds of Pembrokeshire. 
GREATER SHEARWATER, Pufinus major. — An occasional 
visitor; rare. Writing to us on September r8th, 1886, the Rev. 
Clennell Wilkinson, rector of Castle Martin, says: ‘‘ The Greater 
Shearwater I think I have seen washed up dead on the shore, 
but that was some years ago, and I am not now very certain 
about it.” This is a considerably larger and lighter coloured 
bird than the Manx Shearwater, and is an irregular visitor, 
sometimes in large flocks, from the Atlantic to the coasts of 
Devon and Cornwall, and is well known to the people of the 
Scilly Isles, so that it very probably enters the Bristol Channel 
occasionally, and may occur in Milford Haven, &c. 
FULMAR, Fulmarus glacialis.—A very rare accidental straggler in 
the autumn and winter. This, the largest of the British Petrels, 
is a well-known Polar species, inhabiting a few islands to the 
extreme north of the British Isles ; St. Kilda, a remote island of 
the Hebrides group, being its metropolis, and here the birds 
annually resort to nest in incredible numbers. When obtained 
anywhere in the south, the Fulmar is generally picked up, some- 
times inland, either dead, or in an exhausted state, when it is in- 
capable of flight. There is only a single instance of its occurr- 
ence in Pembrokeshire, and this was one that was brought alive 
to Mr. C. Jefferys, of Tenby, in December, 1890, having been 
caught on a cod line in Tenby Bay. 
GREAT NORTHERN DIVER, Colyméus glactatis. — A winter 
visitor. The Great Northern Diver is a regular visitor in the 
winter to our bays from the north, and is sometimes numerous 
in Milford Haven. Adults, in full plumage, are rare. Mr. 
Dix states that, after a severe gale, one was shot in Milford 
Haven, at the beginning of December, 1865. Sir Hugh Owen 
has shot the Great Northern Diver in Fishguard Bay. Immature 
birds are most frequently obtained. From its powers of diving, 
its rapid progress beneath the water, where it uses both wings 
and feet, it is difficult for a boat rowed by good oars to overtake 
the Great Northern Diver, and, as it can keep its body sub- 
