What is the reason why the pigeons lie on the ground

The pigeons may be too high on the ground, or it may be bathing in the sand, or it is holding the nest.Birds such as pigeons do not like high temperatures. If the temperature is too high, find a cool place, or lay on the ground to dissipate heat.At the same time, this kind of bird and sand bath need to use sand to clean up their bodies. At this time, they will lie on their stomachs.In addition, there is another possibility that the eggs are incubation, but the eggs are usually in the nest.