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Records of Phylloscopus warblers singing a mixture of Willow Warbler and Common Chiffchaff songs are not uncommon. Of 11 mixed singers found recently in the Cambridge area, all appeared to be Willow Warblers…

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Skomer Island, off the Pembrokeshire coast, has some of the finest seabird colonies in Britain, including the largest colony of Manx Shearwaters in the world, although most visitors come to see Puffins at what is the best site for this species in southern Britain…

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The Sandwich Tern is a familiar seabird yet little is known about its foraging ecology. This paper brings together the results from four years of boat-based visual tracking of Sandwich Terns from the UK’s largest breeding colonies, at Blakeney Point and Scolt Head…

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The decline of the Willow Tit in the UK has made it a conservation priority species. We present evidence that in some areas of the UK there has been an increase and colonisation over the past 25 years…

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The Common Buzzards from Fuerteventura, in the Canary Islands, are distinctive. This taxon often resembles Long-legged Buzzard but also shows some plumage traits consistent with Common Buzzard…

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A female ‘Dark-breasted Barn Owl’ was found breeding with a male of the nominate subspecies at a site in Cheshire & Wirral in May 2014…

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The Sacred Ibis is common and widespread in its native range, and thrives in landscapes modified by human activity. In recent decades, non-native populations have become established in several areas of Europe…

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Bermuda is a UK Overseas Territory in the western North Atlantic and was uninhabited before being settled by the British over 400 years ago. It is one of the most isolated inhabited islands in the world. Despite its remoteness and its suburban landscape, it has a remarkable avian richness and history…

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Merlins breeding in the Lammermuir Hills, in southeast Scotland, were studied from 1984 to 2014 in an area of heather moorland managed intensively for driven grouse shooting…

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This short paper seeks to clarify some of the problems of, and present a workable policy on, hybrids and intergrades.

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