For the fourth time, on August 4, the National Day of Calakmul was celebrated, a site recognized by UNESCO as Mixed Cultural and Natural World Heritage, unique in Mexico in this category.
Monthly Archives: August 2019
2 posts
It is well known that the contribution of the society to scientific research has grown in recent years. Citizens therefore also have an important role to play in monitoring biological diversity. In particular, the eBird tool or the Spanish version AVerAves,