How many siberian cranes at Bharatpur wetlands reach every year ?

<10.

The size of the population tells us a lot about its status in the habitat. Whatever ecological processes we wish to investigate in a population, be it the outcome of competition with another species, the impact of a predator or the effect of a pesticide application, we always evaluate them in terms of any change in the population size.

The size, in nature, could be as low as <10 (Siberian cranes at Bharatpur wetlands in any year). Siberian Cranes would start flying towards India in mid-October and stay here till March or April.