Breeding and wintering bird distributions in Britain and Ireland from citizen science bird atlases

Breeding and wintering bird distributions in Britain and Ireland derived from citizen science bird atlases during five periods: 1968–1972, 1988–1991 and 2008–2011, and the winters 1981/1982–1983/1984 and 2007/2008–2010/2011. This dataset accompanies this paper: Gillings, S., Balmer, D.E., Caffrey, B.J., Downie, I.S., Gibbons, D.W., Lack, P.C., Reid, J.B., Sharrock, J.T.R., Swann, R.L. & Fuller, R.J. Breeding and wintering bird distributions in Britain and Ireland from citizen science bird atlases. Global Ecology and Biogeography. Please refer to this paper for further information. We thank the tens of thousands of volunteers who have contributed to these atlases over six decades; without their dedication, these citizen science projects would have been impossible. The four atlas projects were funded through a combination of corporate and governmental sponsorship and charitable donations from members and supporters of the non‐governmental organization that conducted the projects [the British Trust for Ornithology, BirdWatch Ireland (formerly Irish Wildbird Conservancy) and the Scottish Ornithologists' Club].