This is the horrendous sound of a hungry cockatoo.
The clip, filmed on June 9 in Mount Barker, South Australia shows the moment a juvenile cockatoo perched on top of a post started to scream for its mother to feed it.
The sulphur-crested cockatoo is known to scream when they are bored, hungry or wanting attention.
"The juvenile sulphur-crested cockatoo which is an Australian native bird is making a horrendous yet humorous call to its mother to be fed, I just can't stop watching the video!" the filmer told Newsflare.