Letters

01 July 1948 Comments Letters SIRS,---In an article on this subject (antea Vol. xl, pp. 62-4) A. Whitaker cites as examples of abnormality two diving descents by Rooks (Corvus f. frugilegus) and Jackdaws (C, monedula spermologus) from an estimated height of 600-700 feet to a freshly p...
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Letters

01 March 1929 Comments Letters SIRS,--In connexion with Mr. J. Bartholomew's observation of a Blackbird reaching maturity with a deformed bill (Vol. X X L , p . 69), a somewhat similar case has come under m y notice this winter. In this case it is a n Alpine Chough (Pyrrhocorax graculu...
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