4758 Tur ZooLocist—JANUARY, 1876. 
appeared to be in a state of semi-starvation during the whole time, 
and which were delaying their already-commenced migration for the 
purpose of regaining ‘ power to take so long a flight.” The ‘ wind-bound” 
theory, in the sense Captain Hadfield applies it, is his own: I had not the 
least idea that the force of the wind alone prevented the swallows pursuing 
their migration for twelve days, but that the peculiar cold which accom- 
panies an easterly wind at that season, and has such a numbing and 
depressing effect both on mau and beast when exposed to its influence, was 
the cause; and I still think that my theory, when applied to my com- 
munication, is equally as tenable as Capt. Hadfield’s. May it not be that 
the same instinct which teaches migrants that when the wind * veers to the 
east or north-east,” in October, a general move is necessary, teaches those 
which were compelled to remain until November that when the wind veers 
to east in that month, attended by cold, it is necessary they should delay 
their migration until a more genial wind prevails? I must confess can see 
nothing to prevent such a supposition. Judging from Capt. Hadfield’s 
paper, I think his thirty years’ experience, although it may have enabled 
him to get rid of Gilbert White’s mud theory, still leaves him im a sad 
muddle as to the causes of the migration of birds.—Stephen Clogy ; Looe. 
Sea Birds at Flamborough.—October 12th.— ‘Two Richardson's skuas, 
both birds of the year, were killed by Mr. Bailey to-day off Flamborough 
Head. They are now in my collection, and present a great contrast, one 
being a very dark, and the other a very light-coloured specimen. ‘There are 
still a few miniature terns about the coast. 22nd.—I was at Flamborough 
to-day, and walked along the cliffs to Filey. ‘There were very few birds to 
be seen. I observed one large hawk near the Flamborough Lighthouse, 
which was apparently a female hen harrier. In the course of my walk 
I put up a quantity of blackbirds from the ledges on the cliffs, which 
I think were newly-arrived migrants from the north, as they were very 
unwilling to take wing, and when disturbed soon settled again. There 
were a few fieldfares with them, and one bird which—from its note—must 
have been a ring ouzel. 28th.—Mr. Bailey sent me a mature gannet from 
Flamborough to-day, which had been driven ashore by stress of weather ; 
both the wings were broken close to the body—I suppose from coutact with 
the rocks. November 6th.—I received to-day two little gulls, in the flesh, — 
one an adult, the other immature,—which Mr. Bailey had shot south of 
Flamborough Head: the whole plumage of the immature bird was suffused 
with an exquisite salmon-coloured tinge, which was most conspicuous on the 
breast. 9th.—When at Filey to-day [ obtained two little auks from 
Mr. Brown, which bad just been brought in from Filey Brigg. A green- 
shauk was shot on the Brigg on the 6th. TL observed a curious-looking bird 
on a shelf in Mr. Brown’s shop, which he kindly brought down for my 
inspection ; it was a variety of the razorbill, a first year’s bird, which had 
the parts of the plumage which are usually black af a fawn-colour; the 
