How to Prevent Birds from Flying into Windows

Glass windows can be extremely dangerous for birds, leading to a significant number of bird window collisions each year. According to a study, up to 1 billion birds die from window strikes in the U.S. annually. However, there are simple remedies that can greatly reduce the likelihood of these collisions. By following the guidance provided by the Bird Collisions Program of the American Bird Conservancy and the Fatal Light Awareness Program, homeowners can make their windows bird-friendly and protect these animals from harm.

Key Takeaways

• Implement bird-friendly window solutions to prevent bird strikes.
• Follow guidance from organizations like the Bird Collisions Program and the Fatal Light Awareness Program.
• Consider using window decals for bird safety or installing bird window screens.
• Be aware of the dangers posed by reflective glass or bird feeders near windows.
• Explore effective prevention methods such as vertical markings, screens, and shutters.

Why Birds Hit Windows and the Different Types of Collisions

Birds often collide with windows for various reasons. Understanding these causes is crucial in finding effective prevention methods to alleviate bird window collisions. Let’s explore the different types of collisions and the reasons behind them.

Daytime Window Collisions

During daylight hours, birds frequently crash into windows due to several factors:

• The reflection of vegetation: Birds mistake the reflection of trees and plants in windows for real foliage, leading to collisions.
• Seeing through the glass: Birds may be attracted to potted plants or vegetation on the other side of the glass, causing them to fly towards the windows.

These daytime collisions can be particularly problematic for birds that rely on their vision to navigate their surroundings.

Nighttime Window Collisions

At night, migratory birds are especially prone to hitting lighted windows. These collisions are influenced by:

• Low-ceiling or foggy conditions: When visibility is reduced, birds may unintentionally fly into illuminated windows instead of following their regular flight trajectory.

These nighttime collisions can be tragic for migrating birds, disrupting their journeys and potentially causing injuries.

Bird Attacks on Windows

“Birds may provoke direct attacks on windows, especially during the spring when territoriality is high. These aggressive behaviors can lead to collisions and result in injuries to both birds and windows.”

In the breeding season, birds might perceive their own reflection in windows as an intruder and attack it repeatedly, causing collisions. This territorial behavior is more common with certain species, such as Cardinals and Robins.

The image above represents a bird attacking a window, highlighting the intensity of this behavior.

Identifying Dangerous Windows and Assessing the Need for Prevention

To effectively prevent bird window collisions, it is vital to identify windows that pose a danger to birds and assess the need for preventative measures. By understanding the bird’s point of view and considering factors such as reflections, safe distances, and the presence of bird feeders outside windows, homeowners can take appropriate action to make their windows bird-friendly.

When evaluating windows, pay attention to the following:

1. Dangerous window types: Large picture windows and windows at right angles to each other are particularly hazardous for birds. Also, windows with bird feeders outside should be carefully examined.
2. Reflections: Birds often mistake reflections of branches or the sky for actual space, leading to collisions. Look for areas where reflections are visible on the glass.
3. Visibility of the other side: Can birds see through the glass to potted plants, vegetation, or other bird-attracting features? These elements may tempt birds to fly towards the window.

Past recommendations about safe distances for bird feeders outside windows are no longer valid. Regardless of the distance, if there are windows near a bird feeder, it is crucial to make them bird-friendly to reduce the risk of collisions.

To get a better understanding of what birds see, step outside and evaluate your windows from a bird’s perspective. Look for reflections, visibility, and potential hazards. Taking this bird’s point of view allows you to identify problematic areas that require immediate attention.

Next, let’s explore effective window marking techniques that can further minimize bird collisions.

Effective Window Marking Techniques

Bird collisions with windows can be significantly reduced by implementing various window marking techniques. These methods help birds recognize the presence of glass and avoid colliding with it. By making windows more visible to birds, homeowners can create a safer environment for these beautiful creatures.

Vertical Markings

One effective approach is to apply vertical markings on windows using tempera paint or soap. These markings should be spaced in a 2-inch by 2-inch grid pattern. Vertical lines provide a visual cue that helps deter small birds from colliding with the glass.

Decals, Dot Patterns, and Tape

Using decals, dot patterns, or strategically placed tape on windows can also help prevent bird collisions. These visual cues act as a barrier, alerting birds to the presence of the glass. Homeowners can choose from a variety of decals and tapes available in the market specifically designed for bird collision prevention.

Acopian Bird Savers and Screens

Another effective option is to install Acopian Bird Savers, also known as zen curtains, or screens on windows. These devices create a barrier between birds and the glass surface, making it easier for birds to recognize the presence of a solid object.

Netting, One-Way Transparent Film, and Shutters

Netting or one-way transparent film can be installed on windows to create a physical barrier that prevents birds from colliding with the glass. Additionally, shutters can be closed during the day or when windows are not in use to eliminate the risk of collisions.

Sun Shades or Awnings, Screen and Glass Combination, and Interior Vertical Blinds

Installing sun shades or awnings on the exterior of windows can help reduce reflections and provide shade, making the glass more visible to birds. Combining screens with glass can also create a visible barrier. Interior vertical blinds can be partially closed to create visual barriers while still allowing light into the room.

Avoiding Visual Paths to Sky and Greenery

When designing the layout of windows, it is important to avoid creating visual paths to sky and greenery on the opposite wall. These reflections can confuse birds, leading to collisions. Careful placement of furniture and other objects can help minimize these visual paths.

Implementing effective window marking techniques is crucial for reducing bird collisions. Homeowners can choose from a variety of methods, such as vertical markings, decals, screens, and netting, to create a safer environment for birds. By taking these preventive measures, we can help protect our feathered friends and promote harmonious coexistence.

Lights Out Initiatives and Artificial Light at Night

Lights Out initiatives aim to address the issue of artificial light at night, which poses a significant threat to migrating birds. In many U.S. cities, these initiatives are gaining ground as people recognize the importance of reducing artificial light to protect bird populations.

Artificial light at night can disrupt the natural behavior of birds, particularly during their migration. City lights can attract and disorient birds, leading to collisions with buildings, including windows. These collisions result in injury and mortality for many migratory birds.

To mitigate the impact of artificial light on bird migration, cities are implementing Lights Out initiatives. These initiatives involve the practice of turning off nonessential lights during specific migratory periods, such as spring and fall when bird activity is high.

One key aspect of Lights Out initiatives is the installation of downward-facing lighting. By directing light downwards, cities can minimize light pollution and reduce the attractiveness of tall buildings to migrating birds. This proactive approach helps create safer migratory paths for birds, reducing the risk of collisions.

While these Lights Out initiatives are effective in reducing artificial light and its impact on bird migration, individual actions are also crucial. Homeowners can play a vital role in making their windows bird-friendly by implementing bird collision prevention methods discussed in earlier sections.

By combining Lights Out initiatives at the city level and individual efforts to reduce bird window collisions, we can create safer environments for migrating birds and help preserve their populations.

Helping Birds After Window Collisions

When a bird strikes a window, it is crucial to provide immediate assistance by capturing and containing the bird. Approach the bird from behind, cover it gently with both hands, and place it in a suitable container that is dark, quiet, warm, and secure.

It is important not to handle, feed, or water the bird. Contacting a wildlife rehabilitation facility is essential for further instructions. These professionals have the expertise to assess the bird’s condition and provide the necessary care it needs for recovery.

If instructed to release the bird, take it to a wooded area away from buildings and assess its flight before releasing. Giving the bird the opportunity to regain its strength and ensure it can fly properly is vital for its survival. By following these steps, you can play a crucial role in bird rehabilitation and contribute to their well-being.