Head & Principal Ecologist
Gavin leads the BTO’s Terrestrial Ecology team, which currently comprises up to 15 analytical and field research staff, conducting and supervising pure and applied research on terrestrial bird ecology.
Interests & Responsibilities
Terrestrial bird ecology at a range of spatial scales, from territories to landscapes, via field experiments and analyses of large-scale, long-term datasets. Research at the BTO has considered migration ecology, cause of decline in woodland birds and methods of population trend analysis, but has focused primarily on farmland birds, contributing directly to government policy on the environment.
A major three-year project on the demography of farmland birds (1996-1999), involving detailed analyses of extensive data sets held by the BTO and other organizations, helped to identify causes of decline. Subsequent large-scale projects have tested the hypotheses identified using landscape-scale field experiments and have also considered the likely efficacy of management solutions (2001-2007).
More recently, research has focused on testing the agri-environment solutions to farmland bird conservation problems and on measuring the effects of current issues in farmland such as the disappearance of set-aside. A parallel research direction is considering bird-habitat modelling, considering both habitat types per se and habitat heterogeneity.
Planned future research directions include further work on heterogeneity and habitat interactions, the ecology of predation and the design and testing of agri-environment solutions to the farmland bird conservation problems that still remain.
Member of the Editorial Board of Bird Study. Member of the British Ornithologists’ Union’s council.
QualificationsBA Natural Sciences (Zoology), University of Cambridge 1990 PhD Aspects of Vocal Communication in the Carrion Crow, University of Leicester 1995
Recent BTO Publications
Content Related to Gavin Siriwardena
Distance functions of carabids in crop fields depend on functional traits, crop type and adjacent habitat: a synthesis
Using butterfly survey data to model habitat associations in urban developments
This study used data from 160 urban sites in England, collected by volunteers taking part in the Wider Countryside Butterfly Survey, in which BTO is a partner.