However, snarling between littermates is usually much less intense than a full-fledged confrontation. Of course this can also indicate a fight between two adult animals. Snarling and thumping noises are common at this stage of development. At some point they begin to wrestle and fight. This is a common noise made by a litter of juvenile raccoons as they develop. They may be chewing to improve passageways. Grinding noises are made as rodents chew woodwork. Likely culprits are rats, mice, Grey Squirrels, and Flying Squirrels. Grinding noises are likely to be made by some type of rodent. Flying squirrels travel faster than bats and are more likely to be heard inside interior walls. I have captured up to twelve flying squirrels in a single attic. Bats are awkward crawlers and do not generally move quickly.įlying squirrels will also live in a home as a colony. Bats will move up or down as a group to find better temperatures or to approach the exit point. On average, a residential bat colony will have about 20 members. Several species can inhabit a home as a colony. Noises like this usually are indicative of a group of animals living as a group. I thought that this was very descriptive. I had one customer describe noises associated with his bat colony as a tiny herd of animals galloping through his walls. If this is the case, the kitten-like noises give way to raucous thumping noises and soft snarls as the kits grow older and begin to wrestle and play. Soft kitten-like mewing noises in the attic can indicate the presence of a very young raccoon litter. Generally though, squirrels are more likely to make pitter pat foot steps, scratching, and possibly grinding noises as they chew on woodwork.
If the squirrel makes a leap from one point to another, it can generate enough kinetic force to create a heavy thump. Grey Squirrels do not have the body weight to make truly heavy thumping noises like raccoons, but they can, if circumstances are good, make a sizeable thump. The second largest species that invades attics is Grey Squirrels. If heavy thumping is heard in the winter it may be some type of adult interaction. If the noise is heard in the springtime, this is probably the case. Once they reach a certain stage in their development, they begin to tussle and wrestle. I tell my customers to think about a litter of puppies. But as the kits begin to grow larger they make a lot more noise. Generally, female raccoons are relatively quiet in the early stages of the denning process.
Most people underestimate the frequency with which they invade attics. Raccoons are the largest, heaviest attic invaders and I routinely remove them from attics. Heavy thumping noises are obviously going to be made by larger animals. If the animal goes through the insulation to the drywall while tunneling, this can be heard in the room below. They also like to tunnel and dig in the insulation to create dens and travel tunnels. Once they get through the insulation to the drywall, they may keep on “digging”. Squirrels sometimes carry nuts into attics and attempt to bury them in the insulation. It is better to have this checked out early than wait. It is hard to determine, without an inspection, how heavy the infestation is. They will also attempt to feed in pantries and kitchens.
If mice are being heard overhead, they are probably also present in basements and crawlspaces. These noises may also be accompanied by noises in walls if there are openings at the head or foot of the wall that allow access. Mouse-sized rodents will make softer noises and do not have the weight to make heavy thumping noises. Rodents are the some of the fastest moving animals that live in attics. This sound is most likely made by an animal in the rodent class. Soft skittering that crosses the ceiling quickly I have inspected hundreds of attics and have verified the noise sources in most all cases. So, I have put together a short page on diagnosing attic noises. Every year I get hundreds of calls regarding problem wildlife inside the home and a large percentage of these calls are regarding attic noises. People who have this problem need to know what is living in in their house. Dictionary of Attic Noises -Diagnosing Your Attic NoiseĬustomers who hear attic noises and think that they have nuisance wildlife are, more often than not, correct.
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