At what age young peacock begin to scream like in this video?

[Petrisor]

 

[zazouse]

Mine stated under the age of a year and even had a hen join them

 

[Mmmatt13]

I can't wait for mine to start!

 

[zazouse]

The first time 4 of mine were screamming at 4am in the morning i thought to myself now this would not go over in a neighborhood AT ALL

Thank god i don't have neighbors cause i love the sound. and the sound they make when they all come flying home from the fields when they get a bug up their butts

 

[Lil Zoo]

I love it too. I agree the females can be just as vocal when chasing another thinking it has something it wants.