The Yellow-billed Teal is a common duck of southern South America. The species shows the compact proportions typical of teal and is gray below and brown above with a dark brown head and yellow bill. Overall Yellow-billed Teal look like a darker, smaller and less elegant version of the widely sympatric Yellow-billed Pintail. Birds from the high altiplano are pale silvery below, whereas the lowland race is darker grayish brown. In flight and when excited, males give a creaky "peeet" call and females quack, also typical of teal.