"Jem whistled bob-white and Dill answered in the darkness."

Bobwhite (also known as the Virginia Quail or Bobwhite Quail) is a ground-dwelling bird native to the United States, Mexico, and the Caribbean. Its body is brown, speckled in places with black or white. Its average weight is 140–170 g. 

The name "bobwhite" derives from its characteristic whistling call; it is a rising, clear whistle: bob-White! or bob-bob-White! The call is most often made by males in the spring and summertime. Other vocalizations include a range of squeaky whistles.