Bird whistle
Usually a noise made with ones mouth imitating a birds mating call.
lyre bird can imitate any sound it hears deeming it a bird whistle;
Ariana can imitate the lyre bird's mating call by whistling.
Ariana can do the bird whistle.
Ariana can imitate the lyre bird's mating call by whistling.
Ariana can do the bird whistle.
Whistle bird
Whistle announcing the end of the working day in a factory or industrial setting.
Fred and Barney were very excited whern the whistle bird blew.