Sand martin

The sand martin (Riparia riparia), also known as the collared sand martin or common sand martin, and in the Americas as the bank swallow, is a migratorypasserinebird in the swallow family Hirundinidae. It has a wide range in summer, embracing practically the whole Holarctic area, from Europe, across Asia to the Pacific Ocean, and throughout North America. It winters in eastern and southern Africa, southern Asia, and South America.