Chinese sparrows, commonly known as the Eurasian tree sparrow (Passer montanus), are small birds found across East Asia, including China, Japan, and Korea. They have a distinctive brown and white plumage, with a black patch on their cheeks. These birds are social and often seen in flocks, foraging for seeds and insects in urban and rural areas. These sparrows prefer habitats near human settlements, such as gardens, parks, and agricultural fields. They build their nests in various locations, including tree cavities and buildings. Their adaptability to different environments has contributed to their widespread presence in many regions.