Since 2011, groups in the UK and internationally have met on the last day of November to hold memorials for extinct species. There have been ceremonies for the Great Auk (d.1844) and vigils for missing butterflies. In Brighton, paper flags inspired by Mexico’s Day of the Dead were waved in a procession for the Caribbean Monk Seal (d.1952). In 2014 there were a number of centenary memorials to the Passenger Pigeon (d.1914).

RDLS 2016 marked the 80th anniversary of the extinction of the thylacine, and RDLS 2017 delved into the newly-documented insect population collapses across Europe with a theme of lost and disappearing pollinators.

Participants around the world mark the day in a wide range of ways. See a compilation of 2016 events here and some 2017 events here.

Burial at sea for the great auk, Brighton 2011

Feral Theatre’s Thylacine Tribute Cabaret, September 2016. Photo: Mari Opmeer

remembering-the-western-black-rhinoChildren remember the Western Black Rhino, Carmarthenshire, 2012

Tree climb for lost lemurs, Glasgow 2016

Ore & Ingot’s mobile foundry. O&R cast the Bell for Lost Species, 2015

solitaireProcession for the Rodrigues Solitaire in Brighton 2012. Photo: Ben Ellsworth

Martha’s Flock, Carmarthen, 2014. Artist Emily Laurens. Photo: Keely Clarke