Letters

01 June 1991
Comments Letters Keeping warm. In his useful 'Birdcraft' article on clothing for birdwatchers (Brit. Birds 84: 27-30), Dr M. A. Ogilvie could have given one more useful tip of which a surprisingly large number of birdwatchers are apparently unaware. Most farmworkers, e...
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Letters

01 May 1978
Comments Letters Field identification of Black-throated Diver in winter Mystery photograph 14 (Brit. Birds 71: 34) was very interesting and instructive. It illustrated clearly the distinctive white thigh patch of Black-throated Diver Gavia arctica, which I have...
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