"Passer domesticus", also known as the house sparrow, is a common bird species found in urban and suburban areas across the world. Synonyms for this term include the common sparrow, the English sparrow, and the house finch. These birds are small and brown in color, with distinctive black markings around their eyes. They are known for their bold and gregarious nature, often seen flocking around bird feeders and nesting in community spaces like building eaves and gardens. While they are sometimes considered a nuisance due to their loud chirping and messy habits, house sparrows also play an important role in urban ecology as seed dispersers and insect predators.