Letters

01 August 2004
Comments Letters I write in reply to the letter by Combridge et al. (2003), and to agree with their view that the claim by Roberts et al. (1999), of `a real increase' in numbers of breeding Honey-buzzards Pernis apivorus in Britain in the last 30 years, has not yet been s...
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Letters

01 November 1984
Comments Letters Recommended letter-code abbreviations for British birds. For over 20 years, members of the BTO have been using letter-codes to register birds seen on Common Birds Census visits. Various additions to the list of codes have been made over the years, nota...
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