India, March 22 -- March 20 is celebrated as the World Sparrow Day to emphasise the need to protect these little birds, as well as their habitats. A sparrow is to the city what a tiger is to the forest.Sparrow populations in many countries around the world are declining. The shocking and the inconvenienced truth is that the population of sparrows is declining at the fastest pace. Sparrow is a very important member of various urban and natural food chains and food webs. Sparrows are the sweetest birds that live around us and as a child, every one of us should have enjoyed their sightings all around us. The house sparrow is one of the best friends of human. The association between humans and the house sparrow dates back to several centuries a...