VOL. XI. | NOTES. 67 
on the 29th, two Swifts went by. (Breeding pairs of Swifts 
did not arrive in Norfolk until May 13th.) 
Some further light is thrown upon the route taken by 
these migrating Swallows by a letter I received on Friday, 
May 4th, from R. Pinchen at Cley (between twenty and 
thirty miles east of Hunstanton), in which he says: “ At 
the end of last week large numbers of Swallows were flying 
west, past Cley, along the coast line all day.”’ 
They must, I think, be birds which, after crossing the 
channel, follow up the eastern coast-line of England, and, 
as in the case of the autumn migrants, reach their inland 
destinations via the Wash and the course of the rivers Ouse 
or Nene. 
In conclusion, the following extracts from my notebook . 
will serve to indicate the arrival of Swallows in the district 
around Norwich. April 15th, one. April 19th, one.. April 
24th, one. April 26th, five. April 28th, “‘a few about.” 
May Ist, “Quite a number of nesting pairs.” May 6th, 
** Full numbers—or nearly—of breeding pairs here now.” 
B. B. RIVIERE. 
SWALLOW NESTING IN A DUG-OUT IN FRANCE. 
My son, 2nd-Lieut. Eliot Wallis, writes to me that, seeing 
a Swallow (Hirundo r. rustica) come out of a deserted German 
dug-out in north-east France, he looked and found a nest 
“ with four spotted eggs ’’ about six feet six inches from the 
floor of the dug-out, and about on ground level, for it was 
approached by several steps’ down. As every chimney, 
house and shed had been levelled by the retreating enemy 
the birds had evidently returned to the usage of an earlier 
day, for few of us have seen a Swallow’s nest in a cave. 
H. M. Wattis 
LARGE PERCENTAGE OF FULL BROODS OF 
SWALLOWS IN LANCASHIRE AND WESTMORLAND. 
JUNE 1917 showed, in north Lancashire and Westmorland, 
the largest percentage of full Swallow broods for the past nine 
years, viz.: 65°5 per cent. as compared with 50 per cent. in 
1915 and 45 per cent. in 1911, the two next best years. The 
average per brood was 4°5 as compared with 4°65 in 1915 and 
4:4 in 1911. H. W. Rosrnson. 
MORTALITY AMONGST GREAT CRESTED 
GREBES. 
Durine the past two months (May and June, 1917) the 
Messrs. Sheals, taxidermists, Belfast, have received great 
