Here is a video of a sulphur-crested cockatoo, very determinedly pushing a brick off a rubbish bin in order to be able to access its contents. https://www.yout

Here is a video of a sulphur-crested cockatoo, very determinedly pushing a brick off a rubbish bin in order to be able to access its contents. https://www.youtube.com/watch?v=rOpFZYVpezI https://www.youtube.com/watch?v=rOpFZYVpezI It's quite incredible to me, the way it seems to understand the physics of the brick quite well.