The pack density of urban coyotes can be high, says a paper in the current issue of American Midland Naturalist. As part of a long-term study of coyotes in Massachusetts, the researchers observed that a pack of coyotes north of Boston was able to survive in a particularly small territory. The pack, they say, was of average size for the region: four coyotes in winter, six to seven in summer. But the pack occupied just two square kilometers. Read more here.

Find a free version of the paper here.