The Lincolnshire Garden Bird survey started over Winter 1985/86, and Winter surveys have run every year since that time, with Summer surveys run continuously since 2003. The basic requirement is to report the maximum number of birds seen using the garden at any one time. Two major statistics are produced from this: the mean peak count which shows changes in the numbers of birds using gardens and the percentage of survey weeks in which a species was recorded. Although a relatively simple survey, and enormous amount of information is generated which enables us to monitor the populations of our common birds and report on those species included in the Lincolnshire Biodiversity Action Plan. For more information on the Garden Bird Survey see the Lincolnshire Bird Club website.