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Letters

01 December 1956 Comments Letters I N T E R P R E T A T I O N O F V A R I A T I O N AMONG T H E YELLOW WAGTAILS S I R S , -- May I ask a little of your space in which to comment on some points in Dr. Mayr's summing-up (antea, pp. 115-119) of our present state of knowledge of the Yellow Wa...

The passage of Black Terns Through Britain in Autumn 1954

01 July 1955 Comments Main paper (Fair Isle Bird Observatory) T H E unusual passage of Black Terns (Chlidonias niger) through the British Isles during the spring of 1954 has been discussed by Dickens (1955)- This was followed by an equally abnormal passage during the autumn. There appear...

Reports on the movements of some commoner summer migrants at British Bird observatories in 1951

01 July 1952 Comments Main paper As already mentioned, these reports are confined to the spring migration. The expression " Bird/Days," as used last year, represents the sum of the birds recorded each day, and as individuals may stay for more than one day it does not necessarily represe...

Notes

01 March 1949 Comments Notes ...

Notes

01 March 1948 Comments Notes ON July 19th, 1947, whilst cycling near Heytesbury, Wiltshire, I heard some Magpies (P. p. pica) chattering, as though alarmed, in a hawthorn not far from the road. I turned and was just in time to see a Carrion Crow (Corvus c. corone) strike a Magpie to...

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Letters

The passage of Black Terns Through Britain in Autumn 1954

Reports on the movements of some commoner summer migrants at British Bird observatories in 1951

Notes

Notes

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