Why Starlings Are a Problem for Commercial Properties
European Starlings are a highly adaptive and invasive bird species that thrive in urban and commercial environments. While they may seem harmless at first glance, their nesting habits and behaviors can cause significant issues for businesses, from property damage to health hazards.
Starling Nesting Habits
Understanding starling nesting behaviors can help businesses take proactive measures to prevent infestations.
• Nesting Season: Starlings typically nest from early spring through summer (March–July), with some locations seeing activity into late summer. They can have 2-3 broods per year, meaning they reproduce rapidly.
• Nest Locations: Starlings seek out small, enclosed areas to build their nests. Common locations in commercial properties include:
- Roof vents
• HVAC systems
• Building ledges
• Eaves and overhangs
• Signage and awnings
• Gaps in walls or structures
• Parking garages and warehouses
• Nest Construction: Their nests are bulky, made of twigs, grass, and debris, and can quickly clog vents and drains, creating fire hazards and airflow issues.
Why Businesses Should Be Concerned
• Health Risks: Starling droppings carry diseases such as histoplasmosis, which can pose respiratory risks to employees and customers.
• Property Damage: Their acidic droppings can corrode building materials, while nests can block drainage systems and create fire hazards.
• Increased Pest Activity: Starlings attract secondary pests, such as mites and insects, which can lead to further infestations.
• Noise & Disruptions: Starlings are loud and aggressive birds, often gathering in large flocks that create disturbances.
Preventing Starling Nesting on Commercial Properties
• Seal Entry Points: Inspect buildings for gaps or openings larger than 1.5 inches and seal them with bird-proof materials.
• Install Protective Netting: Netting over potential nesting areas prevents access.
• Use Bird Deterrents: Visual deterrents, sound devices, and spike strips discourage nesting.
• Regular Maintenance: Inspect and clean problem areas before nesting season begins.
By taking proactive steps to deter starlings, businesses can reduce property damage, improve safety, and maintain a cleaner environment for employees and customers.
