Opossums are one of Southern Maine’s most adaptable wildlife species. These nocturnal marsupials can survive in a variety of environments, and their activity changes with the seasons. Understanding when and why they are most active can help homeowners protect their property and prevent unwelcome encounters.
Spring: Increased Foraging and Breeding
As temperatures rise and food sources become more abundant, opossums begin actively foraging after the slower winter months. Spring is also breeding season, meaning you might see opossums traveling more frequently as they search for mates and nesting areas. This increased movement can lead them into residential areas in search of pet food, compost piles, or unsecured garbage cans.
Summer: Abundant Food and Young on the Move
Summer brings plenty of food—berries, insects, small animals, and leftovers from human activity. Juvenile opossums, born in the spring, start venturing out on their own, increasing the likelihood of sightings. Warm weather also means opossums are more likely to be active for longer periods at night. Homeowners should ensure outdoor trash bins are tightly sealed and any potential den sites, such as under decks or sheds, are secured.
Fall: Preparing for Colder Weather
In the fall, opossums focus on building fat reserves for the winter. They may roam more widely to find food, especially as natural sources like insects and fruit begin to dwindle. This is a time when they might become bolder about raiding gardens, compost bins, or chicken coops. Eliminating easy food access can help reduce fall wildlife conflicts.
Winter: Reduced Activity but Not True Hibernation
Opossums do not hibernate, but they are far less active during Maine’s cold winters. They may hole up in dens during extreme weather, emerging only to forage when conditions allow. If they find shelter in a warm, safe spot—such as a crawl space or attic—they may remain there for extended periods. Sealing gaps and entry points before winter is key to keeping them outside where they belong.
Keeping Opossums at Bay Year-Round
No matter the season, keeping your property less inviting to opossums is the best defense. Secure trash, remove pet food from outside, block access to potential den sites, and maintain your yard to limit hiding spots.
If opossums become a recurring problem or take up residence too close for comfort, Critter Control of Southern Maine can help. Our team specializes in humane, effective wildlife removal and prevention strategies tailored to the local environment.