The Silver Medal of the Zoological Society of London is "Awarded to a Fellow of the Society or any other person for contributions to the understanding and appreciation of zoology, including such activities as public education in natural history, and wildlife conservation.
"[1] It was first awarded in 1847.
[2] In 1964, the criteria for the Silver Medal were changed, split into 2 categories.
Category 1 is awarded to individuals for Curation or distinguished service to the Society, whilst Category 2 is awarded to fellows who have provided a significant contribution to the field of zoology, including in both wildlife conservation and public education of natural history.
[3] Seirian Sumner