Bird Safe Buildings Prevent Bird Deaths from Windows

Glass Buildings with Birds

Bird Safe Buildings Prevent Bird Deaths from Windows

An average 600 million birds die from window collisions every year in the U.S. and is possibly as high as 1 billion birds. It is the second human-caused source of bird mortality that is measurable and causes immediate injury or death. . (U.S. Fish & Wildlife Service, 2021) And we can reduce that number by making changes in how we design our buildings.

Support the Bird Safe Buildings Action of 2021

This video explains the issue of window collisions, and shares how you can easily support the Federal Bird Safe Buildings Act of 2021 (H.R. 1986). This reduces bird collisions with glass windows on newly built and refurbished federal buildings. This bill needs support and cosponsors to become a law. This is a bill in the US Congress in 2021.

Learn More on Preventing Window Collisions

Our December Denver Audubon Conservation in Colorado virtual lecture is entitled “Bird-Safe Legislation from the Local to the Federal Level.” Our experts discuss features that make buildings more visible to birds and examples of successful legislation to address bird collisions with glass (including updates on the federal Bird Safe Buildings Act). The program is Tuesday, December 14, 5:00-6:00 pm MT via a virtual webinar. Register on the Denver Audubon Events page.

You can also visit our Bird Window Strike Prevention page for links to resources that help you assess and treat windows in your home.


U.S. Fish & Wildlife Service. (2021) Threats to Birds. Available at