Last year, I spent a day tracking a female to her litter with the UC Santa Cruz Puma Project on the edge of a Silicon Valley suburb. Her den was a quarter mile from a dense development and 100 yards from a service road used by hundreds of walkers, runners, and cyclists every day. The Puma Project published a study recently showing how these suburban females are making more kills and spending less time at their kills than their more rural Santa Cruz cougar neighbors, because of their proximity to people.
No reason presumed cats in the MA, RI, and CT suburbs shouldn't be leaving lots of kills and nursing litters on the edge of developments and service roads as well.