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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 July 1936 Comments Notes CROSSBILLS' METHOD OF FEEDING, A NOTE in the June number of British Birds (Vol. XXX., p. 27) by B. D. Moreton, tempts me to carry the observations a little farther by publishing a few notes made as long ago as 1888 on the method of feeding of some Crossbi...

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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

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