Letters

01 April 1979 Comments Letters Birds dunking food There are many references in the literature to birds washing food; they cover about six families and almost all are for water birds. Although termed 'food washing', the behaviour described may fulfil several functions. During...
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Letters

01 February 1964 Comments Letters 'Industrial' discoloration of House Sparrows Sirs,--I was rather interested in Ian Woodward's suggestion (Brit. Birds, 56: 470-471), following my note on 'industrial' discoloration of House Sparrows Passer domestkus {Brit. Birds, 56: 296-297), that white ...
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