Named after Dr. E A Cockayne, The Cockayne database website was developed collaboratively by the Natural History Museum in London and Dr. Cockayne's Trust. The central aim of the website is "to provide free access to a comprehensive atlas of British butterflies and moths, illustrating all native and introduced species and their variation." This site represents the first phase of the Cockayne project focusing on British Butterflies, and it currently "provides approximately 1700 images illustrating geographic, seasonal, genetic and major individual variations." Site visitors can search the database by scientific or common name, or by browsing numerous images of native and regular migrant species. This site also provides information about the Cockayne Fellowship for new work on Lepidoptera.