Flamingos put their eggs in small portions of earth,named Rias in Natual protected places such as these where they find the conditions and material they need for constructing their nests. As other birds, humans may want to eat their eggs and animal predators are also wiiling to eat them. Any disturbance may provoque the abandon of places like these and may not come any more for next years.

Source: Flamencos in Yucatán by Emma Romeu