I think its a nice idea overall. Maybe you might want to try a desert scenery in the background or something of the sort? and it would be nice if the bird was working on a road. To me, the bird looks a bit too relaxed and content to be in jail. Hope that helps
The human ear looks a bit freaky. Nice idea on the phrase, but think it might be funnier if it was just a chicken, rather than a chicken-human mixture?