Glass Collisions

Downloadable Resources

Anna's Hummingbird ©In the Light Photography/Shutterstock

American Bird Conservancy's Bird-Friendly Resources

Knowledge is key to reducing bird collisions. At American Bird Conservancy, we're dedicated to providing the public with the information and analyses necessary to prevent bird collisions.

Our library contains a collection of materials produced by American Bird Conservancy that offer guidance based on both science and experience. 

To find materials, you can scroll through the adjacent listing or use the search feature below.

How to Search Our Resource Library

Finding materials is easy. You can scroll through the adjacent listing, search by title, or sort alphabetically or chronologically using the dropdown atop our listing.

Search Resources by Title

American Bird Conservancy Model Bird-friendly Building Ordinance October 2023

About the Prescriptive Rating Option: What's a Material Threat Factor (January, 2023)

Annotated Bibliography of Glass Collisions (11/22)

Misguiding Light: The Role Artificial Light Plays in Bird Mortality from Collisions with Glass and Why We Need a Policy Solution

Spreadsheet of Materials and Threat Factors

A summary of materials with Threat Factors

Collisions Guide from the Glass Traps Foundation of Poland

Polish-language Collisions Guide



American Bird Conservancy Model Bird-Friendly Building Ordinance

Basic language to use as a basis for crafting new legislation or evaluating proposed or existing legislation.

AIA Continuing Education Class: Mastering Bird-friendly Design

This class focuses on materials used in bird-friendly design and the legislative landscape architects now encounter.

Bird-Friendly Glass and other Materials

An overview of materials commonly used in bird-friendly design, including glass with fritted, printed, etched and UV patterns, spandrel glass and sunshades.

The Powdermill Test Tunnel

A brief description of the tunnel test, from acquiring birds to calculating a Material Threat Factor.