the kid .......... here is a link to a site from a search I did for this item. It shows the item, explains a little on how it actually works. I in no way am promoting this site, only that it was the first site that I found that shows a good picture with an explaination.

https://www.jesseshunting.com/osCommerce/product_info.php/products_id/558

As for shooting, I prefer a broadside shot (base of the wing) or a shot where they are walking away (non strut) and take them in the ccenter of the back. A head on shot is tough beause of their eyesite and their ability to see your movement in taking the shot, I prefer to have them looking in another dirrection.

Good luck.