Letters

01 December 2000 Comments Letters Not all readers may be aware of the high numbers of birds of prey that are kept in captivity and the relatively large numbers of these that subsequently escape into the wild. The recent fashion for keeping and breeding hybrid falcons leads to a high pr...
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Letters

01 September 1989 Comments Letters The identification of large terns. The paper on the 'Identification of large terns' (Brit. Birds 80: 257-276) gave the impression (fig. 2) that Royal Tern Sterna maxima has an almost blood-red bill, not especially dissimilar from that of Caspian S. cas...
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