hi Harley!
If you look in the top two sticky posts "Hermes Knowledge" and "Hermes info catalogue" They are plastered with pictures of Kelly Birkin bags.
I think the main confusion comes because of so much diversity in material and color regarding these two coveted bags, and that they both use the same closure/lock hardware mechanism...
They are two very different bags....
The Birkin is more like a tote style bag with two handles and a flap whereas the Kelly is is more feminine/dressy/purse type with a single handle on the cover/flap of the bag. They kelly also comes with a shoulder strap.
I'm sure you'll have no problem finding tons of pictures to compare. Just browse around the sticky!!