A recent study by the Pennsylvania Game Commission has shed some light on the mysterious decline of muskrat populations that has been occurring in the state as well as throughout the eastern U.S. and ...

Tom Hardisky believes he knows the reason why muskrats have been on the decline in Pennsylvania. Problem is, there might not be a solution. Muskrat populations have declined over the last 25 years and ...

Muskrat populations have been declining for more than half a century across North America. In Pennsylvania, the number of muskrats harvested each year has dropped from 720,000 in 1983 to 24,792 in ...

Muskrat populations declined sharply across North America over the last 50 years or so, and wildlife scientists have struggled to understand why. A Pennsylvania research team investigated whether ...

“It’s a beaver!” “No, it’s a muskrat!” “It’s a beaver!” “No, it’s a muskrat!” ADVERTISING Such exclamations are often heard at Huntley Meadows Park in Alexandria, Va., where both of these semi-aquatic ...

New York Times subscribers* enjoy full access to TimesMachine—view over 150 years of New York Times journalism, as it originally appeared. *Does not include Games-only or Cooking-only subscribers.

Muskrat populations declined sharply across North America over the last 50 years or so, and wildlife scientists have struggled to understand why. A research team investigated whether pathogens, ...