* Population: 1.6 billion
* Distribution: Worldwide
The house sparrow is the most common bird in the world, found in almost every country. It is a small, brown and gray bird with a black bib. House sparrows are adaptable and opportunistic, and can be found in a variety of habitats, including cities, towns, and rural areas. They are often found near human habitation, and are known to steal food from bird feeders.
2. Red-billed quelea (Quelea quelea)
* Population: 1.5 billion
* Distribution: Sub-Saharan Africa
The red-billed quelea is a small, black and red bird that is found in sub-Saharan Africa. It is a social bird that lives in large flocks, and is known for its devastating effects on crops. Red-billed queleas are estimated to cause billions of dollars in damage to crops each year.
3. European starling (Sturnus vulgaris)
* Population: 1.2 billion
* Distribution: Europe, Asia, North America
The European starling is a medium-sized, black bird with a metallic sheen. It is found in Europe, Asia, and North America. European starlings are highly adaptable and can be found in a variety of habitats, including cities, towns, and rural areas. They are often found in large flocks, and are known for their aggressive behavior towards other birds.
4. Common grackle (Quiscalus quiscula)
* Population: 1.1 billion
* Distribution: North America
The common grackle is a large, black bird with a long tail. It is found in North America, from Canada to Mexico. Common grackles are opportunistic feeders and can be found in a variety of habitats, including cities, towns, and rural areas. They are often found near bodies of water, and are known for their loud, raucous calls.
5. Ring-necked pheasant (Phasianus colchicus)
* Population: 1.0 billion
* Distribution: Worldwide
The ring-necked pheasant is a medium-sized, brown and white bird that is found in Asia and Europe. It has been introduced to other parts of the world, including North America and Australia. Ring-necked pheasants are popular game birds, and are often hunted for sport.