Choosing the right size mesh is crucial for keeping birds out of areas where they are unwanted. The optimal mesh size will allow air to flow through while preventing birds from entering. There are a few key factors to consider when selecting bird mesh.
Bird Species in the Area
The size of mesh needed depends on the type of birds trying to gain access. Smaller birds like sparrows and finches can fit through smaller openings than larger birds such as pigeons, crows, and seagulls. If you are mainly trying to block small pest birds, 1/2 inch mesh is usually sufficient. For larger nuisance birds, 3/4 to 1 inch mesh is better. Here are common bird sizes to factor in:
- Finches, sparrows – 1⁄2 inch body width
- Starlings, blackbirds – 3⁄4 inch body width
- Robins – 1 inch body width
- Pigeons – 1 1⁄4 inch body width
- Crows – 1 1⁄2 to 2 inch body width
- Seagulls – 2 inch body width
The best approach is to select a mesh size that is smaller than the body width of the birds you want to deter. This will prevent them from squeezing through the openings.
Type of Barrier Material
Mesh bird netting comes in different materials including nylon, polyethylene, stainless steel, and galvanized steel. The material affects the optimal opening size. For example, flexible netting like HDPE plastic can be pulled apart slightly by birds attempting to get access. Going a size smaller helps account for this stretch. More rigid stainless steel or galvanized mesh does not need as much downsizing.
Material also impacts durability. Stainless steel provides one of the longest lasting bird mesh options, followed by galvanized steel. Nylon and polyethylene are cheaper but degraded by sunlight and other environmental factors over time. Consider the lifespan you need when choosing among bird netting types.
Type of Area Being Covered
Where you are placing the bird mesh is another important factor. Smaller openings are needed for enclosed spaces where birds can land on the barrier and work at enlarging the holes. Using 1/2 inch mesh on an open structure like a poleshed where birds cannot perch directly on the mesh allows you to go a bit larger. Open air spaces also require mesh that permits more air flow. Here are recommended opening sizes based on use:
- Enclosed areas like porches – 1/2 inch mesh
- Overhead structures like gazebos – 1/2 to 3/4 inch mesh
- Rafters, roof peaks – 3/4 to 1 inch mesh
- Open structures like polesheds – 1/2 to 1 inch mesh
In addition to mesh size, pay attention to how tightly the material is installed. Gaps where birds can squeeze through need to be avoided.
Intended Purpose
Why you need the bird mesh also can determine the best size holes. If you are aiming to keep birds away from foliage, crops, or outdoor dining areas, smaller 1/2 inch openings limit their access while allowing you to still enjoy the space. For buildings and structures, you may opt for slightly larger mesh around 3/4 to 1 inch to enable more airflow while still deterring birds. Identify your specific intention to select appropriately.
Conclusion
The ideal mesh size for excluding birds depends on the species you want to deter, mesh material, installation location, and purposes. For broad protection against most birds, 1/2 inch stainless steel mesh is recommended, closing gaps where needed. Narrowing down the bird types you need to manage and thinking through mesh placement will help determine if you can go a bit larger. Paying attention to proper installation is also key so birds cannot exploit gaps and weaknesses in the barrier. With the right mesh sizing and application, you can successfully keep nuisance birds at bay.
Bird Mesh Opening Size Recommendations
| Bird Type | Body Width | Recommended Mesh Opening Size |
|---|---|---|
| Finches | 1/2 inch | 1/4 to 1/2 inch |
| Sparrows | 1/2 inch | 1/4 to 1/2 inch |
| Starlings | 3/4 inch | 1/2 to 3/4 inch |
| Robins | 1 inch | 1/2 to 3/4 inch |
| Pigeons | 1 1/4 inches | 3/4 to 1 inch |
| Crows | 1 1/2 to 2 inches | 1 inch |
| Seagulls | 2 inches | 1 inch |
This table provides a guide to recommended mesh opening sizes based on common bird widths. Choosing a mesh hole size slightly smaller than a bird’s body width helps prevent them from squeezing through.
Mesh Materials Comparison
| Material | Pros | Cons |
|---|---|---|
| Stainless Steel |
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| Galvanized Steel |
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| Polyethylene (HDPE) |
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| Nylon |
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This table compares the advantages and disadvantages of common bird netting materials. Factors like durability, cost, and project needs help determine the best choice.
Installation Tips for Optimal Bird Control
Properly installing bird netting or mesh is just as important as the size openings. Gaps in the coverage or loose areas will allow determined birds to gain access. Here are best practices for maximizing the effectiveness of your bird barrier:
- Measure area accurately and buy sufficient material to avoid gaps in coverage.
- Use proper gauge wire or cabling to support mesh and keep it taut.
- Seal edges and seams thoroughly with zip ties, clips, or sealant to prevent openings.
- For netting, secure top and edges first, then work downward to maintain tightness.
- Overlap any mesh seams by at least 3-4 inches to account for stretching.
- Recheck installation 1-2 weeks later and adjust as needed to correct sagging.
Paying close attention to proper bird netting and mesh installation techniques will help reduce gaps and weaknesses birds can exploit. This will lead to the maximum deterrent effect.
Conclusion
Installing bird netting or mesh is an effective way to humanely block birds from entering or nesting in undesirable areas. The appropriate mesh size involves balancing airflow needs and accessibility for different bird species. For broad spectrum protection, stainless steel or galvanized steel mesh with 1/2 inch sized holes provides a durable option suited to keeping most birds out. Smaller mesh down to 1/4 inch may be needed just for small pest birds. Matching mesh size to the types of birds you want to deter and properly installing the material to avoid gaps will result in an optimal bird barrier.
