Few species are more frustrating to taxonomists than the North American caribou. Ranging from the Canadian Arctic to the Great Lakes, caribou vary enormously in size, color, antler shape, habitat, and behavior. Some aren’t much bigger than domestic dogs; others are almost big enough to rub shoulders with a moose. For more than two centuries, scientists have argued over the identities and distributions of caribou subspecies and populations, and while they now generally agree on the existence of four North American subspecies, naming criteria remains controversial and, in some places, wildly inconsistent. The confusion has consequences not only for science but also for the caribou themselves: Because some subspecies are protected by Canadian and U.S. endangered-species laws and others are not, names can determine destiny.
In 2012, a conservation biologist named Jean Polfus, a doctoral student at the University of Manitoba, arrived in the Sahtú region of Canada’s Northwest Territories. Polfus hoped to help ease the confusion over caribou by pairing a population genetics study with the hundreds of years of observations and knowledge accumulated by the region’s Dene and Métis people. But collaborations between Western scientists and local residents are often fraught: some Dene oppose scientists’ use of radio-collars in wildlife studies, and while visiting researchers often talk about including traditional knowledge into their work, only a few pay it more than lip service.



We came back from vacation earlier this month to find that someone else had moved in. I didn’t realize it at first—the house seemed just as we had left it, and we were busy emptying the car and starting the laundry and repopulating the house with the things we’d taken with us.

