Letters

01 August 1996
Comments Letters The recent British Ornithologists' Union conference on 'Feral and introduced birds' prompted Holmes & Stroud (1995) to suggest a possible set of standard terms for describing the status of naturalised birds. Indeed, these terms could equally apply ...
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Letters

01 November 1992
Comments Letters Shell identification. May I respectfully point out that the bivalve shell attached to the bill of a Dunlin Calidris alpina in plate 111 is not a cockle Cardium, but looks very like a thick trough shell Spisula solida. This species has a much thick...
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