"Once the trap wire is strung, we pour the elixir of the gods-that's this blood-and-fish-guts perfume you are pretending not to notice on us, Rory-into our new trap and leave for another couple of weeks. While wandering around up there we'll also cover the Flattop Mountain Trail from below Fifty Mountain Camp to the middle of the Waterton Valley and the West Flattop Mountain Trail from the continental divide to Dixon Glacier. Bears are like us: they like to take the easy way when they can. So we've located and marked a number of trees along the trail system that they are particularly fond of scratching their backs on. We'll collect hair samples from these, as well as any samples of scat we happen across."

The lecture was for Rory. Anna had heard it before when Joan and her boss, Kate, explained the daunting task of data gathering for the DNA project, the inspiration of Kate Kendall, a researcher working jointly with the USGS-the United States Geographical Survey-and the NPS. From the hair and scat collected, the DNA of individual bears would be extracted. Modern techniques used by the lab at the University of Idaho would establish gender, species and individual identification of the animals sampled. With this information, it was hoped an accurate census of the bears could be established, as well as population trends, travel routes and patterns. This trapping system had been designed to give every single bear at Glacier an opportunity to be counted.

"We'll be out five days," Joan finished. "Leaving tomorrow at the crack of dawn."

No one spoke for a moment, the three of them gazing at the map as if at any moment it would begin to divulge its secrets.