Letters

01 February 1994 Comments Letters An answer to Chylarecki's comments on the 'new Herring Gull taxonomy' The new Herring Gull taxonomy adopted by the editorial board of British Birds (86: 1-2) has been questioned recently by Chylarecki (1993a), with whose comments we partly agree and ev...
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Letters

01 December 1966 Comments Letters Week-end bias, length of stay of rarities and proportion of rarities undetected Sirs,--Although the effect of 'week-end bias' (the increased watching at week-ends) is often commented on, there appear to be no figures to show exactly how marked it is. In a...
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