Caño Negro Wildlife Refuge

In the northern lowland plains, Caño Negro is seasonally flooded, forming lakes and marshes that are home to many different species, especially birds. In the dry season, the area is reduced to little lagoons, river channels and strips of riverbank inhabited by many different birds,

like cattle egrets, wood storks, roseate spoonbills, and the largest colony of cormorants. The river shelters tortoises, caimans, and about 30 species of fish, including the prehistoric gar, considered to be a living fossil.