RCC, we do have a chevron backed timber ratter variant in the Southeast; we call it a cane-break rattler. Much more colorful than the timber with pinks, purples and reds. You are dead right though about the timber rattlers mainly sticking to the woods. Our diamondbacks are usually seen on high open ground, whereas the the cane-breaks are usually encountered, well, in the cane-breaks here-abouts...Geo