Letters

01 October 2000
Comments Letters The RSPB agrees with Bernard Zonfrillo (Brit. Birds 93: 394-396) that the world is not ideal, but believes that some of his other comments are misplaced. Globally, introductions are a major cause of biodiversity loss (Vitousek et al. 1997) and pose a s...
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Letters

01 March 1986
Comments Letters 'Pishing' technique. For many years, I have been delighting and often surprising overseas birders visiting North America by enticing numbers of passerines and other landbirds out of dense cover and into view by 'pishing'. Although the technique varies ...
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