The farm-bred mink are unlikely to survive more than a few days in the wild, Carmel told the Berkshire Eagle.
Teresa Platt, a spokeswoman for Fur Commission USA, estimated that the theft cost the farm between $75,000 and $100,000. She said Carmel and his wife kept up to 30,000 mink for fur production purposes, with about 500 used for breeding.
Platt, whose nonprofit group represents mink farmers, said such break-ins are not unusual. "It's usually three to six people driving around causing trouble," she said. "They often get into a car and go across a couple of states. They'll hit a shoe store because they are selling leather goods. They'll hit a McDonald's or a mink or chicken farm. They don't agree with the ownership or use of any animals."
No arrests were reported.
"We're researching some leads that we have, but we haven't got a lot of physical evidence," said Hinsdale Police Chief Christopher K. Powell.