This will be my third post in a row with a US theme or author. But I just have to share the photos by Joel Sartore at this site
http://www.joelsartore.com/gallery/index.asp . The ‘fragile nature’ gallery has my favourites but it takes a while to download.
I found his photos after reading an interesting piece by Rick Bass on the reintroduction of wolves to Yellowstone National Park just published by OrionOnline http://www.oriononline.org/pages/om/05-4om/Bass.html .