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Article
G. M. Siriwardena, AuteurCapsule: Although stable in their preferred, wet habitats, Willow Tits have declined in woodland, probably because of habitat degradation rather than increases in avian nest predator and competitor numbers. Aims: To elucidate the cause of the po[...]
Article
M. J. Whittingham, Auteur ; R. B. Bradbury, Auteur ; J. D. Wilson, Auteur ; A. J. Morris, Auteur ; A. J. Perkins, Auteur ; G. M. Siriwardena, AuteurNumbers of many bird species which breed ore farmland, arid are reliant ore cropped land for feeding or nesting, declined between the 1960s and 1990s. In contrast, Chaffinch Fringilla coelebs numbers increased on farmland over the same period. T[...]
Article
G. M. Siriwardena, Auteur ; S. R. Baillie, Auteur ; J. D. Wilson, AuteurTo identify the environmental changes responsible for population trends, it is useful first to determine the demographic mechanisms through which they have acted. We present new analyses of survival rates, using British ring-recovery data from 1[...]
Article
G. M. Siriwardena, AuteurData from long-term schemes monitoring abundance and breeding performance were used to investigate the patterns and causes of decline of the Marsh Tit Parus palustris in Britain. Data from the British Trust for Ornithology's Common Birds Census [...]
