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 January 1969
Comments Letters White-lumped Swifts in southern Spain During 1964-67 a number of observations were made on swifts with white rumps in southern Spain, and in 1966 and 1967 breeding was proved; the species was identified by me and others as Apus affinis (Little Swift), the...
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Letters

01 January 1969
Comments Letters Turtle Dove migration in Iberia and the Middle East Dr R. K. Murton's suggestion that the autumn passage of Turtle Doves Streptopelia turtur through Portugal is misleadingly represented by the recovery of marked individuals seems to mar his otherwise exce...
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