Letters

01 December 2001 Comments Letters When watching House Martins Delichon urbica in 1967, I wrote in my notebook: `Is the mud for the structure of their nests carried on, rather than in, their beaks?'. My impression then was that the birds carried up the mud on the beak, and pressed it in...
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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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