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Article
Mo A. Verhoeven, Auteur ; Jennifer Smart, Auteur ; Charlie Kitchin, Auteur ; Sabine Schmitt, Auteur ; Mark Whiffin, Auteur ; Malcolm Burgess, Auteur ; Norman Ratcliffe, AuteurDuring the last 50 years, the breeding population of Continental Black-tailed Godwits Limosa limosa limosa in the United Kingdom has been relatively small (below 60 pairs) and largely concentrated in two locations in eastern England. There were [...]
Article
Neil M. Dawson, Auteur ; Colin D. Macleod, Auteur ; Malcolm Smith, Auteur ; Norman Ratcliffe, AuteurMany of the UK's seabird species have displayed high variation in breeding success since the 1980s, largely due to changes in the availability of Lesser Sandeels Ammodytes marinus, their main prey. During this time, Arctic Skuas Stercorarius par[...]
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Fiona Sharpe, Auteur ; Mark Bolton, Auteur ; Rob Sheldon, Auteur ; Norman Ratcliffe, AuteurColor bands and radio tags are widely used to facilitate individual recognition and relocation of precocial chicks in studies of prefledging survival. However, the accuracy of data collected and subsequent estimates of survival rates rely on the[...]
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Richard J. Evans, Auteur ; Jeremy D. Wilson, Auteur ; Arjun Amar, Auteur ; Andrew Douse, Auteur ; Alison MacLennan, Auteur ; Norman Ratcliffe, Auteur ; D. Philip Whitfield, AuteurWhite-tailed Eagles Haliaeetus albicilla became extinct in Britain in 1918 following prolonged persecution. Intensive conservation efforts since the 1970s have included the re-introduction of the species to Britain through two phases of release [...]
Article
Norman Ratcliffe, Auteur ; Ian Mitchell, Auteur ; Karen Varnham, Auteur ; Nanette Verboven, Auteur ; Paul Higson, AuteurRats have been introduced to islands throughout the world. They have caused breeding failures, population declines and complete extirpation of vulnerable bird species. Such impacts can be difficult to diagnose in situations where extirpation occ[...]
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Gillian Gilbert, Auteur ; Glen A. Tyler, Auteur ; Christopher J. Dunn, Auteur ; Norman Ratcliffe, Auteur ; Ken W. Smith, AuteurGreat Bitterns Botaurus stellaris have experienced a population decline in the UK, such that in 1997 the total number of breeding males was just 11. This study aimed to identify factors affecting productivity, and how management could be used to[...]
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Norman Ratcliffe, Auteur ; Clive Craik, Auteur ; Alice Helyar, Auteur ; Sugoto Roy, Auteur ; Martin Scott, AuteurDans Ibis (150 AUG 2008)American Mink Mustela vison is a semi-aquatic predator that has invaded the west coast of Scotland and many of its associated islands. We developed a GIS model of their potential range based on their dispersal abilities and habitat use, which re[...]
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Norman Ratcliffe, Auteur ; Tara Pelembe, Auteur ; Richard White, AuteurThe Ascension Frigatebird is an island endemic whose conservation status was subject to confusion owing to difficulties in counting and misinterpretation of data. Accurate nest counts for this species are problematic owing to their extremely pro[...]
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Catharine Horswill, Auteur ; Jason Matthiopoulos, Auteur ; Jonathan A. Green, Auteur ; Michael P. Meredith, Auteur ; Jaume Forcada, Auteur ; Helen Peat, Auteur ; Mark Preston, Auteur ; Phil N. Trathan, Auteur ; Norman Ratcliffe, Auteur1. Understanding the demographic response of free-living animal populations to different drivers is the first step towards reliable prediction of population trends. 2. Penguins have exhibited dramatic declines in population size, and many studie[...]
