How many coyotes are in a pack? How many coyotes are in Chicago?

Our observations (during tracking, helicopter flights, and trapping) have revealed that the coyotes in our study maintain territories as groups unless living as a solitary animal. Group size in protected habitats is typically five to six adults in addition to pups born that year. It is estimated that between 1,500 and 2,000 coyotes may reside in Cook County, IL.

Coyote 115 at capture

We were not able to capture the first mate of Coyote 1 prior to his death (likely from a vehicle), but we captured her second mate, Coyote 115, on February 18, 2004, at the peak of the mating season. Coyote 115 was in excellent condition at 18 kg (40 lbs). He remained with Coyote 1 constantly until her death in 2010. Their relationship was interesting to observe, where at times they were inseparable, and other times they would take short breaks from each other. Still, they defended the same territory together continuously after 115’s collaring date.