Yes sounds like a version of a growl, I hear my gals make that noise also and everyone pays attention. The Rooster has a deeper growl and that also makes everyone pay attention.
Funny last night I was putting the drama queens to bed and usual chaos, so I started shushing to them going shhhhhhh shhhhhhh shhhhhhh and they ALL stopped, froze and didn't make a noise! At the time I didn't click in what it was but the sounds were remarkably like that! Here I thought I had figured out a way to settle everyone! Seems I was scaring them likely!