The Sarus crane, Grus antigone is a monogamous, non-migratory and world's tallest flying bird. Its abundance is positively associated with percentage of wetlands on the landscape, and negatively with the percentage of area under rice cultivation. Biodiversity or biological diversity refers to the variety of life on Earth, comprising millions of plants, animals, microorganisms and the genes they contain. It simply means the existence of a wide variety of plant and animal species in their natural environments or the diversity of plant and animal life in a particular habitat. Pesticides are biologically toxic substances used by humans to kill pests to increase the yield of many crops and to control the spread of insects. In present discussion, authors are trying to discuss the effects of pesticides on sarus cranes and biodiversity.