Passerinae is a subfamily of birds within the family Estrildidae, commonly known as the estrildid finches. This group includes small, colorful birds found primarily in Africa, Asia, and Australia. They are known for their vibrant plumage and social behavior, often seen in flocks. Members of Passerinae typically inhabit grasslands, savannas, and open woodlands. They primarily feed on seeds, fruits, and insects, showcasing a diverse diet. Their melodious songs and active nature make them popular among birdwatchers and aviculturists alike.