The forests of Mohonk are filled with songbirds. We even have a theme program, Birding and Spring Nature celebrating Mohonk's birds. Set of 6 coasters, each of which has a different songbird of the Northeast. On the back of each coaster is a paragraph of interest about each songbird. Mohonk logo on the front of each coaster. Cork is a great ecological choice as it is sustainable (the outer bark of the tree is peeled every 9 years and then regenerates, leaving the tree to continue its 150 year lifespan), recyclable, biodegradable, and supportive of ecosystems throughout the world. These coasters are made in the USA, in Melrose Park, Illinois.