Reviews

01 April 1952
Comments Reviews Proceedings of the Xth International Ornithological Congress, Uppsala, June, 1950. "(Almquist & Wicksell, Uppsala, Sweden, 1952. Price Sw. Kr. 35, or £2 8s. 3d. Obtainable direct from Prof. S. Horstadius, Zoologiska Institutionen, Uppsala). T H I S ...
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Notes

01 April 1952
Comments Notes Song-Thrush nesting in a Monkey-Puzzle Tree.--In connexion with the note (antea, p . 287) on a Mistle-Thrush (Turdus viscivorus) nesting in a Monkey Puzzle tree, it may be of interest to record that on May 6th, 1946, at Oxted, Surrey, I found a nest of a...
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Notes and display of the Magpie

01 April 1952
Comments Main paper (with text illustrations by R. GILLMOR). IN July, 1949,1 acquired a juvenile female Magpie (Pica pica) which was fixated on human beings and when adult regarded me as her mate. This bird's behaviour inspired closer observation of wild Magpies for comparat...
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The movements of Swifts in summer

01 May 1951
Comments Main paper 1950 was a good year for studying the movements of Swifts (Apus apus). Well over 20,000 were reported during the special watch held under the auspices of the British Trust for Ornithology. This covered the arrival period prior to May 15th, 1950. Another 2...
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Editorial

01 May 1951
Comments Editorials As announced in British Birds for March a new editorial board, whose members are named on the title-page, becomes responsible for the conduct of the magazine beginning with this issue. It is intended to maintain broadly the existing traditions, standards...
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Letters

01 May 1951
Comments Letters SIRS,--A serious error has crept into t h e obituary notice of m y old friend Bernard Tucker. To quote : " The memorable Oxford University Expedition to Spitsbergen " took place in 1921 n o t 1922, and Tucker was n o t one of t h e members. I n 1922 F . C...
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Reviews

01 May 1951
Comments Reviews The Breeding-birds of the Netherlands. By A. L. J. Van IJzendoorn. (Brill, Leiden, 1950. 6.25 Guilders). Holland consists of some 33,330 sq. km. (roughly 8 million acres) of land and some 5,000 sq. km. of water, inhabited by a human population now exceedi...
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