|Japanese tree sparrow|
A sparrow is a member of the genus Passer. They are small passerine birds which belong to the family Passeridae. They are also known as old-world sparrows. Sparrows often make their nests near houses or buildings. This means they are one of the easiest birds to see in the wild.
The genus has about 30 species round the world The best known of these is the house sparrow, Passer domesticus.
Some authorities place other genera in the sparrow group: Petronia, the rock sparrows; Carpospiza, the pale rockfinch; and Montifringilla, the snowfinches.
Sparrows are small birds. They are between 11–18 centimeters long. They can weigh between 13–42 grams. They are usually brown and gray. They have short tails and small, strong beaks. Most sparrows eat seeds or small insects. Sparrows are social birds and they live in flocks (groups).
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Sparrow Facts for Kids. Kiddle Encyclopedia.