wooden wind moving things

Hi everyone,
LOL sorry about the topic but i dont know how to describe them really. I think there is a name for it but here it goes. They are different figures like a guy sawing a log or somthin that must be cut out with a scroll saw in individual pcs and then metal rods hook the different pcs together. Then when the wind blows the thing moves and looks like the guy is sawing a log or a variety of things. All the parts are movable. Does anyone know what this is called and where i can get patterns and learn how to make them.
Thanks, John