
In Banff National Park in the Canadian Rockies, various wild animals are implanted with a GPS receiver and a chip, and from that moment they're known as numbers: Deer 48, Fox 21, Bear 71. The park rangers know exactly where they are every moment of every day, and they film their daily comings and goings using the security cameras they set up all over the park. Web documentary Bear 71 lets us watch over their shoulders, to a disturbing effect. Director Leanne Allison's husband, a Banff park ranger, gave her thousands of hours of grainy surveillance footage from the park, from which she and digital documentary pioneer Jeremy Mendes focus in on a three-year-old grizzly: Bear 71. In voice-over, she explains how the animals are being pushed ever further into the mountains by advancing freeways, train