Bird-voiced tree frog

The bird-voiced tree frog, western bird-voiced tree frog, eastern bird-voiced tree frog, or whistling tree frog ("Dryophytes avivocus") is a frog that lives in the southestern United States.
The adult male frog can be 3.8 cm long from nose to rear end and the adult female frog can be 5.3 cm. This frog can be gray, green or almost black in color. It has dark marks on its back, legs and between its eyes.