On the subject of cockatoos, a large flock flying overhead or perching in trees and squawking at top volume can be an overwhelming experience. An Irish friend of my Hubby said that the first time he heard them he ducked for cover. He thought they were banshees wailing overhead.

They are a force to be reckoned with, and a smallhold struggling farmer would have no hope.

flock of cockatoos screeching

Note: the sound on the video is not giving the full effect.

large flock of cockatoos on a grassy area

As I added these links I heard a flock of cockies flying around outside squawking. Maybe they heard the video as I was playing it.