Are you finding more squirrels than usual scampering across your lawn, digging up your flowerbeds, or raiding your bird feeders? The answer to why are there so many squirrels in my yard is usually a combination of readily available food, ample shelter, and a favorable environment. This article will delve into the specific reasons behind a high squirrel population in your yard and offer practical solutions for managing a potential squirrel infestation or simply reducing their numbers.
Image Source: static.wixstatic.com
Deciphering Squirrel Attraction: What Draws Them In?
Squirrels, particularly the common gray squirrel ( Sciurus carolinensis ) and the red squirrel ( Tamiasciurus hudsonicus ), are remarkably adaptable creatures. Their presence in your yard is a testament to your environment providing them with what they need to survive and thrive. Let’s break down the primary factors why are squirrels attracted to residential areas.
Abundant Squirrel Food Sources
Food is undoubtedly the biggest draw for any wildlife, and squirrels are no exception. Your yard likely offers a smorgasbord of tasty treats, both natural and unintentionally provided.
Natural Food Sources
- Nut-Bearing Trees: Oak, hickory, walnut, and beech trees are squirrel magnets. Their acorns, nuts, and seeds are staple foods. If your yard has mature trees of these varieties, it’s a prime dining destination.
- Fruit and Berry Bushes: Fruit-bearing trees like apple, cherry, and pear, as well as berry bushes such as raspberries and blueberries, provide seasonal sustenance.
- Coniferous Trees: Pine, spruce, and fir trees offer pinecones, which contain seeds that squirrels enjoy.
- Edible Plants and Flowers: Certain garden plants, bulbs, and even decorative flowers can be a food source for squirrels, especially when other options are scarce.
Unintended Food Sources
- Bird Feeders: This is a major contributor to high squirrel numbers. Birdseed, especially sunflower seeds and mixed grains, is a high-energy food that squirrels find irresistible. Many feeders are not squirrel-proof, making them easy targets.
- Pet Food Left Outdoors: Leaving pet food, particularly kibble, outside is like rolling out a welcome mat for squirrels.
- Garbage Cans: Unsecured garbage cans can be a treasure trove of discarded food scraps for opportunistic squirrels.
- Compost Bins: If your compost bin is not properly sealed, it can attract squirrels with the scent of decaying food.
- Fallen Fruit and Nuts: Even if you don’t have nut-bearing trees, fallen fruit and nuts from neighborhood trees can accumulate in your yard, providing a food source.
Ideal Habitat for Squirrels
Beyond food, squirrels need safe places to live, raise their young, and escape predators. Your yard might offer excellent habitat for squirrels.
Shelter and Nesting Sites
- Mature Trees: Large trees with hollows or cavities are perfect for nesting and escaping harsh weather or predators. Even trees with dense foliage can offer protection.
- Attics and Eaves: Squirrels are adept at finding entry points into attics, crawl spaces, and under eaves. These areas provide warm, dry, and secure nesting locations.
- Sheds and Garages: Unused sheds or garages can also become attractive nesting sites if there are openings.
- Dense Shrubbery: Thick bushes and hedges can provide cover and nesting opportunities, especially for ground-dwelling squirrels or younger ones.
Environmental Factors Contributing to Squirrel Abundance
Certain environmental conditions can also lead to an increase in the squirrel population in your area.
- Mild Winters: Winters with less snow and milder temperatures can lead to higher survival rates for squirrel populations, meaning more squirrels are ready to breed in the spring.
- Abundant Nut Harvests: Years with exceptionally good harvests of nuts and seeds (mast years) can lead to a boom in the squirrel population the following year as more young survive.
- Lack of Natural Predators: In suburban and urban environments, natural predators like hawks, owls, foxes, and coyotes may be less common, allowing squirrel populations to grow unchecked.
- Proximity to Parks and Woodlands: If your yard is near a park, forest, or undeveloped woodland, it provides a continuous source of squirrels that can then explore your more hospitable yards.
Fathoming Squirrel Behavior: What Are They Doing?
To effectively manage squirrels in your yard, it’s important to understand their typical squirrel behavior. This knowledge helps in anticipating their actions and implementing the most effective solutions.
Foraging and Diet
Squirrels are omnivores with a varied diet, but they are primarily known for their love of nuts, seeds, fruits, and buds. They are highly efficient foragers.
- Caching: Squirrels bury nuts and seeds to store them for later use. This caching behavior is why you might see them digging in your lawn or garden beds. They often forget where they bury many of these items, which can lead to new plants growing.
- Opportunistic Feeding: They will readily switch to other food sources if their preferred foods are scarce or if easily accessible alternatives are available (like your bird feeder).
- Nocturnal vs. Diurnal: Squirrels are diurnal, meaning they are most active during the day. This is why you see them frequently during daylight hours.
Nesting and Denning
Squirrels build nests, also called dreys, out of leaves, twigs, and other soft materials in tree branches. They also utilize tree cavities or man-made structures for denning.
- Seasonal Activity: Squirrel activity often increases in spring as they breed and prepare for offspring, and again in late summer and fall as they prepare for winter by gathering and storing food.
- Territorial Behavior: While not aggressively territorial like some animals, squirrels may defend prime food sources or nesting sites from other squirrels.
Reproduction
Squirrels typically have two litters per year, with spring and late summer being the most common breeding seasons. This can lead to a rapid increase in the squirrel population in a short period.
Common Squirrel Problems in Yards
The presence of a large squirrel population can lead to several nuisance issues in residential yards. Recognizing these common squirrel problems is the first step toward finding solutions.
Garden Damage
- Digging and Burrowing: Squirrels dig up flower bulbs, seeds, and young plants as they search for buried food or to bury their own caches.
- Eating Plants: They will consume flowers, vegetables, fruits, and even the bark of young trees.
Property Damage
- Attic and Wall Entry: Squirrels can chew through siding, soffits, fascia, and roof shingles to gain access to attics or wall voids. Once inside, they can chew on electrical wires (posing a fire hazard), insulation, and wooden structures.
- Chewing on Wires: Exposed electrical wires, including those on outdoor lighting or utilities, can be attractive to squirrels for chewing, potentially causing power outages or safety risks.
- Damage to Bird Feeders: Squirrels are notorious for destroying bird feeders, scattering seed, and sometimes damaging the feeder itself in their efforts to access the food.
Nuisance Behavior
- Noise: Squirrels can be noisy, especially when they are active in attics or walls, scratching, gnawing, and running around.
- Droppings and Urine: Nesting in attics or crawl spaces can lead to unsanitary conditions from their droppings and urine, which can also carry diseases.
- Bird Feeder Competition: While not strictly damaging, their aggressive consumption of birdseed often leaves little for the birds, defeating the purpose of the feeder.
Tackling a Squirrel Infestation: Strategies and Solutions
If you’re experiencing a significant squirrel infestation or just find their presence overwhelming, there are several effective ways to manage them. The goal is often to deter them and reduce the appeal of your yard as a primary food and shelter source.
Habitat Modification: Making Your Yard Less Inviting
The most sustainable way to reduce squirrel numbers is to make your yard less attractive to them.
Removing Food Sources
- Secure Garbage Cans: Use cans with tight-fitting lids and consider bungee cords to keep them shut. Rinse food containers before discarding them to reduce odors.
- Remove Fallen Food: Regularly clean up fallen fruits and nuts from trees and bushes.
- Pet Food Management: Bring pet food bowls indoors after feeding. Do not leave pet food outside overnight.
- Compost Smart: Use a compost bin with a secure lid. Avoid adding meat, dairy, or oily foods that are particularly attractive to rodents and squirrels.
- Squirrel-Proof Bird Feeders:
- Weight-Activated Feeders: These feeders close when a squirrel’s weight is placed on them.
- Baffles: Install cone or dome-shaped baffles on poles supporting feeders or on hanging feeders to prevent squirrels from climbing or reaching them.
- Feeder Placement: Hang feeders at least 10 feet away from trees and structures to make them harder to jump onto.
- Seed Choice: While squirrels love sunflower seeds, consider using safflower seeds or finch mixes, which are less appealing to them.
Eliminating Shelter and Entry Points
- Seal Entry Points: Inspect your home’s exterior for any holes or gaps in siding, soffits, fascia, or rooflines. Seal these with sturdy materials like metal flashing or hardware cloth.
- Trim Tree Branches: Trim back tree branches that overhang your roofline. Squirrels can use these as bridges to access your house. Aim for at least a 6-foot gap.
- Secure Outbuildings: Ensure sheds, garages, and other outbuildings are sealed to prevent squirrels from nesting inside.
Deterrents: Making Your Yard Unpleasant
Various deterrents can make your yard less appealing to squirrels.
Repellents (Natural and Commercial)
- Scent Repellents: Squirrels dislike strong smells. You can try scattering dried chili peppers, cayenne pepper, garlic powder, or ammonia-soaked rags around vulnerable areas. Commercial repellents containing capsaicin or predator urine can also be effective. Reapply after rain.
- Taste Repellents: For plants, you can use a bitter spray made from diluted hot sauce or commercial bittering agents. Be sure to test on a small area first to ensure it doesn’t harm the plant.
- Noise and Movement Deterrents:
- Ultrasonic Devices: These emit high-frequency sounds that are meant to deter squirrels. Their effectiveness can vary.
- Shiny Objects/Spinners: Hanging old CDs, aluminum foil strips, or reflective tape can startle squirrels and make them wary.
- Motion-Activated Sprinklers: These are highly effective for gardens and lawns, surprising squirrels with a burst of water.
Exclusion Methods
- Hardware Cloth/Wire Mesh: Use hardware cloth (1/2-inch or 1/4-inch mesh) to protect vulnerable plants, bulbs, and garden beds. Bury the mesh a few inches into the ground to prevent burrowing underneath.
- Tree Guards: Wrap the base of trees with metal or plastic guards to prevent squirrels from climbing them.
Live Trapping and Relocation
If other methods fail, live trapping might be considered, but it comes with caveats.
- Trapping: Use live traps baited with peanut butter, nuts, or fruit. Place the traps in areas where squirrels are frequently seen.
- Relocation: Important Note: Relocation laws vary by region. In many areas, it is illegal or unethical to relocate squirrels, as they may not survive in a new environment or can spread diseases. Check with your local wildlife authorities before attempting relocation. Trapped squirrels often have difficulty finding food and shelter in unfamiliar territories and can be more susceptible to predation.
Professional Help
If you have a persistent squirrel infestation, damage to your home, or are uncomfortable handling the situation yourself, consider contacting a wildlife removal service. They have the expertise and equipment to safely and humanely address the problem.
Squirrel Population Management: A Balanced Approach
Managing the squirrel population in your yard is about creating a less hospitable environment for them. It’s not about eradication, but about coexisting by reducing the factors that attract them.
Long-Term Strategies
- Community Effort: Encourage neighbors to implement similar strategies. A neighborhood-wide approach is more effective than individual efforts.
- Education: Learn about local wildlife and best practices for coexisting with them.
Creating a Less Ideal Habitat for Squirrels
By consistently removing food sources and sealing entry points, you can gradually decrease the number of squirrels that find your yard appealing. It’s a continuous process, as squirrels are persistent.
Frequently Asked Questions About Squirrel Abundance
Q1: Why are squirrels digging up my flower bulbs?
A1: Squirrels dig for bulbs because they are a good source of nutrients. They also dig to bury nuts and seeds for later consumption and sometimes forget where they’ve buried them.
Q2: Can I use mothballs to deter squirrels?
A2: Mothballs are generally not recommended as a squirrel deterrent. Their effectiveness is questionable, and the chemicals can be harmful to pets, children, and other wildlife if ingested or inhaled.
Q3: Are squirrels dangerous?
A3: Squirrels are generally not aggressive towards humans, but they can bite if they feel threatened or cornered. It’s best to avoid direct contact and never try to feed them by hand.
Q4: What are the signs of squirrels in my attic?
A4: Signs include scratching, scurrying, or gnawing sounds, especially in the morning and late afternoon. You might also find droppings, nesting materials, or signs of chewing on wires or wood.
Q5: How can I stop squirrels from eating my garden vegetables?
A5: Use barriers like chicken wire or hardware cloth cages around your vegetable patch. You can also try scent or taste repellents on the plants themselves.
Q6: Is it harmful to the environment to get rid of too many squirrels?
A6: Squirrels play a role in the ecosystem, for example, by dispersing seeds through their caching behavior. The goal is to manage their population in your yard to prevent damage and nuisance, not to eliminate them entirely from the local environment. Overly aggressive or indiscriminate removal can disrupt the natural balance.
By implementing a combination of these strategies, you can effectively manage the squirrel population in your yard, reducing the likelihood of a squirrel infestation and mitigating common squirrel problems. Remember, consistency is key, and a well-maintained, less inviting yard is the best defense against unwanted squirrel visitors.