During the winter, animals are seeking shelter. In the wild they can find harborage within a tree trunk or an old stump. Squirrels, mice, raccoons and bats have survived this way for years. With the addition of man made structures to their habitat, their options for homes become more diverse. Nuisance wildlife like squirrels, raccoons, bats and mice have a likelihood of survival that increases significantly when they live in close proximity to humans. Not only is there shelter and food, but there is also man made heat and insulation which wildlife seek out during the winter.
When animals are going along the exterior of your home they will sense drafts of air. This warm air is appealing to the animals and they will seek to exploit that.
These drafts can come through intentional vents like attic vents, laundry or bathroom exhaust, builders gaps, gaps that have happened through the settling of the home or the expansion and contraction that happens through the freeze and thaw cycle.
The attic space is an area that is often exploited by wildlife during the winter. Because people don’t frequent their attic, wildlife damage can often go overlooked until a home sale or noise prompts an attic inspection.
Although the snow is one of the driving factors to wildlife entering your home, it does have some perks. It allows tracks to be identified easily, you only have to look for them.
If you believe you have something in your attic, taking a glance at the snow on the roof of your home may confirm or deny your suspicions.