World Sparrow Day (20 March): Theme & House Sparrow Decline

World Sparrow Day is observed globally on 20 March every year to raise awareness about the rapid decline of the house sparrow (Passer domesticus) and other common urban birds. First observed in 2010, the day was initiated by the Nature Forever Society of India, founded by conservationist Mohammed E. Dilawar, in collaboration with the Eco-Sys Action Foundation (France) and several international partners.

The once-ubiquitous house sparrow — "gouraiya" in Hindi, "chakli" in Marathi, "goraiya" in Bihar — has disappeared from many Indian cities. World Sparrow Day is both a celebration of this tiny bird and a warning about the quiet collapse of urban biodiversity.

Key Facts at a Glance

Who Is Mohammed Dilawar?

Mohammed E. Dilawar is an Indian conservationist from Nashik, Maharashtra, who has been working on house sparrow conservation since the early 2000s. He founded the Nature Forever Society (NFS) in 2008 with the specific mission of protecting common species that are often overlooked by mainstream conservation, which tends to focus on charismatic mega-fauna like tigers and elephants.

• TIME magazine named him one of the "Heroes of the Environment" in 2008 for his work on the house sparmax.
• He popularised artificial nest boxes and bird feeders as a low-cost way for ordinary citizens to participate in conservation.
• Nature Forever Society instituted the World Sparrow Award to recognise individuals and organisations for outstanding contributions to sparrow conservation.

The House Sparrow — A Profile

Scientific Classification

Distribution

The house sparrow is one of the most widely distributed wild birds on Earth, native to much of Europe and Asia and introduced to the Americas, Africa, Australia, and New Zealand. In India, it is found from the Himalayas to the southern coast and from Kutch to the Northeast.

Why Are Sparrows Declining?

The population of house sparrows in Indian cities has fallen sharply over the past three decades. The decline is particularly severe in metros such as Delhi, Mumbai, Bangalore, and Chennai. Causes are multiple and interrelated:

1. Loss of Nesting Spaces

• Modern buildings have sealed facades, glass exteriors, and no eaves, holes, or ventilators that sparrows traditionally used for nesting
• Replacement of tiled roofs with RCC slabs
• Removal of hedges and native shrubs

2. Change in Food Availability

• Decline of small provision stores (kirana) where spilled grain was a staple
• Rise of packaged foods and supermarkets
• Shift from mixed backyard gardens to ornamental lawns with no seed-bearing plants
• Heavy pesticide use killing insects, which are essential protein for chicks

3. Pollution & Microwave Radiation

• Mobile phone tower electromagnetic radiation has been cited by several Indian studies (notably by the Ministry of Environment, Forest and Climate Change expert committee in 2011) as a possible factor affecting sparrow orientation and breeding
• Urban air pollution and unleaded petrol additives have been linked to insect decline — the primary food for chicks

4. Predation and Competition

• Rise in urban crow and rock pigeon populations
• Free-ranging domestic cats

5. Lack of Water

• Concretisation of cities reduces natural water points for bathing and drinking

Indian Sparrow Species

India is home to six species of sparrows and closely related petronias:

State Bird Status

• Delhi — declared the house sparrow as the state bird on 14 August 2012, in recognition of its precarious status in the capital
• Bihar — state bird is the house sparrow (gouraiya)

Conservation Action — What Citizens Can Do

• Install nest boxes under eaves, balconies, or on trees — Nature Forever Society popularised a simple wooden design
• Put out bird feeders with millet (bajra), broken rice, or mixed grain
• Provide water in shallow earthen bowls, changed daily
• Grow native plants and hedges — avoid manicured ornamental gardens
• Reduce pesticide use to preserve insect populations for chicks
• Participate in citizen science — eBird, Great Backyard Bird Count, Project Sparrow

Themes of World Sparrow Day (Recent)

Government and Institutional Action

• Bombay Natural History Society (BNHS) has run citizen science programmes on sparrow counts
• Salim Ali Centre for Ornithology and Natural History (SACON), Coimbatore — research on urban bird decline
• Early Bird and similar programmes under the Nature Conservation Foundation (NCF) introduce schoolchildren to common birds
• State-level nest-box drives in Maharashtra, Delhi, Karnataka

UPSC Relevance

GS3 (Environment & Biodiversity): Conservation of common species, urban ecology, biodiversity loss, role of civil society in conservation.

GS2 (Governance): Role of NGOs, state bird declarations, public-awareness days as policy instruments.

GS1 (Indian Society): Relationship between urbanisation, lifestyle change, and loss of everyday biodiversity.

Key Prelims Facts:

• World Sparrow Day: 20 March (since 2010)
• Initiated by: Nature Forever Society (India) + Eco-Sys Action Foundation (France)
• Founder: Mohammed E. Dilawar (Nashik)
• Species: House sparrow — Passer domesticus
• IUCN status: Least Concern (globally), declining in urban India
• State bird of Delhi (declared 2012) and Bihar
• Family: Passeridae, Order: Passeriformes
• India has six species including Sind Sparrow, Russet Sparrow, Eurasian Tree Sparrow
• World Sparrow Award: instituted by Nature Forever Society