When birding in remote locations, be alert and aware of other potentially aggressive and dangerous wildlife, such as bears, moose, wolves, coyotes or mountain lions.

That's about as many people in the U.S. with TB, but unlike TB, M. avium-related disease doesn't spread from person to person.

The Japanese, like the Americans, have experience with sample-return of this sort, having flown a probe called Hayabusa that retrieved dust from the plume of a comet in 2010.