BANGKOK (AP) — Thailand has begun using a birth control vaccine on elephants in the wild to try and curb a growing problem where human and animal populations encroach on each other — an issue in areas where farms spread into forests and elephants are squeezed out of their natural habitat.

The initiative is part of efforts to address confrontations that can turn deadly. As farmers cut down forests to make more farmland, elephants are forced to venture out of their shrinking habitats in search of food.