Letters

01 March 1952 Comments Letters SIRS,--We are hoping to collate information about visible migration over, and on the shores of, the Mediterranean. Very little has been published on the subject and no doubt a good many unpublished records, especially those made on voyages, are in existen...
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Reviews

01 March 1952 Comments Reviews British Bird Boohs : An Index to British Ornithologv, A.D. 1481 to J.I). 1948. By Raymond Irwin (London, Grafton & Co., 1951. 63/-). The title of this book gives a very inadequate idea of its contents since it indexes and classifies, not only books, b u t...
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Notes

01 March 1952 Comments Notes The Display of the Blackbird.--During observations on four pairs of Blackbirds (Turdus merula) in 1949, and on the same four pairs with the addition of another in 1950, the following display was noted. All of the birds concerned were recognizable in the ...
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Visible migration at Land's End

01 March 1952 Comments Main paper THE study of visible migration, initiated by Eagle Clarke (1912), has received a new impetus in the last few years. In October, many Sky-Larks (Alauda arvensis), Chaffinches (Fringilla caslebs) and Starlings (Sturnus vulgaris), with smaller numbers of oth...
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Review

01 March 1941 Comments Reviews Birds of the Grey Wind. By Edward A, Armstrong (Oxford University Press). Illustrated. 12s. 6d. net. THE title of this book and its unusual medley of poetry, history and legend may well hide the fact that also within its pages are to be found some excelle...
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Notes

01 March 1941 Comments Notes As an example of how food-supply can affect the number of birds breeding in a locality the following may be of interest. When I first came to Benenden, Kent, about twenty years ago, so far as I know Hawfinches (Coccothraustes c. coccothraustes) never nes...
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