House Sparrow: Anatomy, Food Habits, Behaviour, Habitat and Conservation

House sparrow is one of the most widely distributed and abundant wild birds found near to humans on Earth. It lives in almost every part of the world and in every country where humans live permanently. They never stay far away from human habitation and depend on humans for food, nesting and shelter. Let’s learn some interesting facts about these little birds, their characteristics, habitats and eating habits.

Table of Contents

• Physical Characteristics of House Sparrow
• What do House Sparrow Eat
• Where do House Sparrow Live
• Why is the House Sparrow Disappearing
• Conservation of House Sparrow
• Frequently Asked Questions about House Sparrow

Physical Characteristics of House Sparrow

The house sparrow also known as passer domesticus is a small perching bird that belongs to the family Passeridae. Although all house sparrows belong to a single genus ‘Passer’, there are over 12 distinct subspecies that vary slightly in plumage and size across the globe. An average house sparrow is 14 to 16 cm long and is 24 to 40 grams in weight. They are highly social birds that are rarely found alone. They live in flocks and make their nests in the same area staying with the same flock members for years. A male house sparrow is distinguished by a female by a grey crown and a black throat bib. Their rounded heads, short tails and short legs are well suited for hopping on the ground.

What do House Sparrow Eat

House sparrows are omnivorous and their diet varies significantly by season, age and what is locally available. They mainly eat grains and seeds although they heavily rely on insects to feed their young ones. Insects such as caterpillars, beetles, flies and spiders constitute the primary source of food for nestling sparrows. Adult female sparrows eat insects during the breeding season. House sparrows living in cities and urban areas have become highly adaptable to eating human food including bread, biscuits, cooked rice and food scraps.

Where do House Sparrow Live 

House sparrows live in cities, towns, villages, farms, agricultural land, suburbs and residential areas. These birds prefer making their nests in trees near the human population or inside man-made structures. They build messy, dome-shaped nests made of grass, feathers and debris. You can often find their nests in wall structures, behind shutters, in porch rafters or in artificial bird boxes. 

These birds are native to Europe, the Middle East and Central Asia. They followed human expansion around the globe over the past few centuries and there are around 1.6 billion house sparrows in the world. They are highly adaptable and have been recorded living at altitudes ranging from sea level to over 4,500 metres in the Himalayas. 

Why is the House Sparrow Disappearing

In the past 25 years the population of house sparrows has been declining primarily due to changes in the urban environment that have simultaneously removed its food, nesting sites and shelter. There are no gaps or cavities for nesting in modern buildings for sparrows to make their nests. Use of pesticide has impacted the population of insects that sparrow chicks eat. Due to decline in growth of weed plants and changed grain storage practices the seed food has reduced. The loss of traditional courtyards, gardens and old buildings has removed the habitat features that sparrows depended on. 

Conservation of House Sparrow

Due to the massive urbanisation, there is a rapid decline in the population of house sparrows. In the last few years this population has dropped to around 60 to 70% in places like India and the UK. To conserve the house sparrow we must restore their basic urban needs including safe nesting cavities, accessible water and pesticide-free feeding areas. Artificial nest boxes are the single most effective and immediate action individuals can take to support house sparrows.