Letters

01 February 2000 Comments Letters Syroechkovski et al. (1998) have recently published the results of a study of Brent Geese Branta bernicla in northwest Yakutia, Russia. They claimed to have located a previously unknown contact zone of Dark-bellied Brent Goose Branta (b.) bernicla and ...
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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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