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FIELD NOTES. 
LEPIDOPTERA. 
Emperor Moth near Halifax. — When on Norland Moor 
with two friends on Sunday, April 19th, we noticed a burnt 
patch of moorland on which we counted twenty-five scorched 
and burnt cocoons of the Emperor Moth (S. carpini), and on 
two more patches similar numbers accounting for at least 
sixty or seventy of these insects. This will account for the 
scarcity, this season, at our nearest locality for the moth. The 
farmers fire the ling, etc., here to keep it in check. — L. 
Aldersox, Halifax. 
[This firing of the moors has become very general, and its 
effect from an entomologist’s point of view is most disastrous. 
In the Huddersfield district Saturnia carpini and Bombyx 
quercus appear to have been well nigh exterminated by it. 
though both were formerly very common ; and many less con- 
spicuous, but equally interesting species, must of course be 
sharing the same fate. — G.T.P.] 
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BIRDS. 
Waxwings at Sleights. — Two waxwings were seen a few 
days ago, feeding upon the berries in Sleights Village, and four 
or five have lately been seen in the woods further up the 
dale. Mr. Joshua Moore has interested the keepers of the 
district in these birds so they are not likely to be molested. 
—Joseph T. Sewell, Whitby, April 2nd, 1914. 
Blue Headed Wagtail at Mytholmroyd. — I was in- 
formed by Mr. Harry Stansfield, Mytholmroyd, that a Blue 
Headed Wagtail was consorting with a small party of Yellow 
Wagtails in a field at Mytholmroyd on the 17th April, and on 
the following afternoon I saw the bird myself. There were 
both male and female yellow wagtails and I had an oppor- 
tunity of comparing it with both at close range through Zeiss 
glasses. The slate-blue head, cream throat, prominent light 
eye streak, and colouration of the dorsal plumage w'ere con- 
spicuous. It was a very beautiful specimen, but its presence 
was apparently unwelcome to the yellows, which persistently 
harrassed it, although the blue headed specimen stood its 
ground gamely. On the two succeeding days it was seen 
in the same place by other observers. There is only one 
previous record of the blue headed wagtail which can be re- 
garded as authentic in the Hebden Bridge district, a specimen 
obtained in 1879. Mr. James Cunningham, of the Halifax 
Museum, who procured this species by the side of a small pond 
at Warley, however, claimed in the columns of The Halifax 
Naturalist some years ago, to have frequently seen the Blue 
Headed Wagtail in the Hebden Valley in previous years. — 
Walter Greaves, Hebden Bridge. . 
Naturalist, 
