Can anyone ID this butterfly?

I found it at the Ballard Locks Seattle, WA. I know nothing about butterfly identities! Thanks!

http://i103.photobucket.com/albums/m...c/DSC03410.jpg

Good Capture Canuck935 , i would have to say its a Eastern Tiger Swallowtail . Theres the Zebra Swallowtail that is very similar but i would have to say Eastern.

Knight, you seem to be quite the bug guru. Did you go to school for this sort of thing or are you self taught thru experience?

Heck no Mike lol , it`s just that i have the National Audubon Society Field guide to Insects and Spiders lol I like trying to find matches hehe if it fails then i hunt the web :)

Dylan i think is the real expert on this stuff , hes always busy with some kind of Nature project :)

Thanks for the ID!