I got it on my Mac and he's great but I need to delete him and can't figure out how I tried uninstalling but he's here still
I don't know if my method of getting the goose to go away works on Mac, but when the goose brings you a message or a image, click that message/image and hold Esc. A progress bar with the text "Continue holding Esc to evict goose" will appear on the top left after holding it for a few secs, so keep holding Esc until the goose disappears.