Thanks, all!
Eric: they were taken on the same day, a few hundred yards apart.
Ed: I don't think so. The eyes are not quite as pin-sharp as the nose but they're pretty good.
Francois: thanks - a fair bit of credit goes to the new engine in LR3, which has done a great job on the noise reduction. The shot was taken on a 5d2 at ISO3200 and lacked any of the background smoothness when I processed it in LR2.
Jeremy