According to Sudbury Police Lt. Robert Grady, a Dudley Road resident reported seeing a black bear Thursday morning in Sudbury about 8 a.m.
Dudley Road is about half a mile from the Nobscot Boy Scout grounds, which lines the Sudbury and Framingham borders.
"We are asking residents to pay attention," Grady said. "These bears are not generally aggressive unless cornered."
Last 7 p.m. night, Russ Platt of Framingham spotted the bear in his yard.
The bear was standing, about 6 feet tall, right outside the picture window at one of our bird feeders, said his wife Judy via e-mail.
The couple live near the Framingham/Wayland line. Judy said the bear retreated back into the woods before they could snap a photo of it.
Grady advised residents to keep their trash covered and to bring in bird feeders until the bear has moved on.
"Don't leave any food out," Grady said. "The bear could be gone tomorrow."
Grady said information about living with black bears can be found on the Town of Sudbury website.