Haha, they do look so unnatural flopped out with that one leg stretched out, it startles me every time too. So you run to see if they are dead and they squawk and run away, and then BOTH of you are startled.
No, you guys...a dead chicken has it's butt in the air. So if you see a triangle[their tails up high] then that is BAD. Obviously they can have legs every which way or wings out, but a butt in the air=dead or dang near it. Also...'screaming goat' is the sound of chickens being massacred. I know this from my dumb dog going for my flock back last fall.
The common dead bird pose is for more 'natural' deaths...or an evil dust bathing chicken wanting to scare the bananas outta you..lol.