Cambridgeshire Bird Atlas 2007–2011
Cambridgeshire Bird Atlas 2007–2011 provides a complete and comprehensive overview of the summer and winter distribution and abundance of birds in the county. There are 500 detailed maps which show where 167 bird species can be found breeding or wintering. Facing the maps are expert species accounts interpreting the maps and placing them in historical and national context.
The atlas has been compiled from data collected for the British Trust for Ornithology's national UK Bird Atlas 2007–2011. That project, perhaps one of the largest examples of 'citizen science' ever undertaken, involved over 40,000 enthusiastic volunteer surveyors over four summers and winters.