Concept:Delhi's former Chief Minister Sheila Dixit raised her concern about the decreasing number of Humble house sparrows in Delhi.Due to urbanization on a large scale, the birds lost their natural habitat and fails to build nests. Causing them to disappear. Mobile radiation and Telecom towers are enemies of Sparrows. They navigate by sensing the earth's magnetic field but the Tv towers and telephone towers disturb the earth's magnetic field and thus they are unable to locate their home. Thus, the Chief Minister of Delhi declared the Humble home sparrow as the state bird of Delhi to raise awareness about it. Explanation:The bird was a common sight in Delhi but now a special day is observed to raise awareness about the bird as it has become rare due to the urbanization. The bird is a sparrow.Additional InformationPeacock Generally found in sub-continent zones of India, such as East Assam, east of Indus river, Jammu and Kashmir, South Mizoram, etc.National Bird of India. KoelKoel are birds having loud distinctive calls.Found in Australia and the Pacific. Parrot Also known as psittacines.Found in all Sub-tropical and Tropical continents.They eat fruits, seeds, vegetables, and nuts. SparrowHouse sparrow is commonly found in most parts of the world.They live in forests, woodlands, grassland, meadows, and deserts etc. The vast population lives in urban area. It has a variety of diets which includes berries, seeds, nuts, fruits etc.