Every year, millions of birds collide with glass windows, doors, and facades, and many of these collisions result in death. As glass becomes a greater element of the external building construction, the number of birds affected by this problem is expected to increase in the coming years.
As building regulations become more stringent across the world, architects are looking for glass solutions that are safer and help to reduce the risk of bird crashes while still providing the aesthetic and performance attributes that their buildings need. Then, in this circumstance, bird-friendly glass enters the picture.
Birds falling into glass can happen for a variety of reasons.
The two most common reasons for birds hitting with glass are its transparency and reflection.
Birds are unable to distinguish between reflections and the real thing. Even low-reflective glass can act as a mirror when it’s bright outside and dark inside. When coupled with specific façade designs, the reflections can create zones that are visually confusing to a Bird-Friendly Glass.
When there is a straight line of sight from one window to another (e.g. walkways, corners, bus stops, or transparent wind/sound barriers), birds do not see the glass as a barrier and attempt to fly through, resulting in a crash.
Indoor plants may also be attractive to birds.
The design of a structure, as well as its location, can have a significant impact on collision risk and accident effectiveness. The collision risk is influenced by the building’s architecture, its location, and the landscape (especially the projected height of the tree as it begins to grow).
Birds use the night sky and ambient light levels to navigate for their migrations. This causes nocturnal crashes because the light inside buildings, especially those with potential bird habitat, attracts them. Artificial lights, particularly those that move upward, can lure and catch birds in their haze, exhausting and killing them.
What are the advantages of using high-quality bird-friendly glass?
Architects may now choose from many bird-friendly glass options, ranging in quality and price. According to field research and tunnel testing, the most successful design solutions follow the 2” by 4” standard. Markings on the horizontal axis must be no more than two inches apart, and markers on the vertical axis must be no more than four inches apart. From top to bottom, these dimensions are shorter and narrower than the wingspans of most flying birds. Even if they don’t see the glass, birds perceive the patterns as tightly spaced obstacles. As a result, the birds are less inclined to try flying through the window.
According to a considerable study, the most effective marks are placed on the outer surface of any building’s external portion. This surface is significant because it is the only one that is always visible, regardless of lighting conditions.
The glass might appear transparent, glossy, or extremely dark depending on the lighting. As a result, markings left on interior surfaces are less visible in certain lighting conditions, making them undetectable to birds. However, many bird-friendly solutions fall into this category. Acid-etched Glass, on the other hand, does not have this issue.
Acid etching, unlike ceramic frit markers, produces a permanent imprint on the glass surface and creates no extra layers that fade or wear away over time. Because acid-etched markers are embedded in glass, they will not degrade or lose their effect when exposed to the environment. Acid etching of glass sheets is done at the manufacturing. If window design planning is not done effectively, a significant amount of the glass sheet may be wasted. The goal is to acquire as many usable slices as possible from each sheet. By adopting these design principles, architects may stay on budget while avoiding bird collisions. Then pick a multi-directional design for even greater efficiency.
Mornglass.com is a unique source of bird-friendly glass. We’ll help you select the right glass for your needs and have a team of skilled professionals double-check the whole installation process. You can contact us at any moment if you require assistance.