A sparrow is a small, brownish-gray bird you've probably seen hopping around parking lots, parks, or sidewalks looking for crumbs. These tough little birds live almost everywhere humans do, from bustling cities to quiet suburbs, thriving in places where many other wild animals struggle.

House sparrows, one very common type, originally came from Europe and Asia but now live on every continent except Antarctica. They're about the size of a tennis ball, with short tails and thick beaks perfect for cracking seeds. Male sparrows have black bibs on their chests and chestnut-brown stripes, while females wear more subtle brown and tan patterns.

Sparrows are famously scrappy and resourceful. They'll eat seeds, insects, or even French fries from a dropped lunch. They nest in gutters, streetlights, or anywhere they can squeeze in, and they're not easily frightened by noise or crowds. This adaptability is why they've spread so successfully around the world.

The word sparrow sometimes appears in phrases that capture the bird's humble nature. In ancient times, sparrows were so common and inexpensive that they became symbols of things abundant but often ignored, reminding us that even ordinary creatures have their own kind of toughness and dignity.