The Spreading Chaos of Bird Window Collisions

Updated: Aug 26, 2020

Window collisions kill nearly a billion birds in the U.S. every year. Every window poses a risk and commercial buildings, with their enormous walls of glass, are a particularly dangerous obstacle for migrating birds.

For property owners, these tragic bird deaths are compounded by the other problems they create.

Fortunately, there are new, cost-effective collision avoidance solutions that can reduce bird deaths by 95%.

A Growing Need to Protect Birds

Dead and injured birds draw other wildlife into close proximity with the building and the people around it. Birds, dead or alive, can carry diseases, but the higher risk comes with the scavengers they attract, including coyotes, raccoons, rats, mice, wasps, ants, roaches, opossums, feral cats and stray dogs.

Injured and stunned birds are easy prey and dead birds are an easy meal. Scavengers are likely to return to the site of frequent collisions, marking and patrolling a site multiple times a day. These scavengers (and the fecal matter they mark their patrols with) can carry numerous diseases and create an unsightly health risk to building occupants and visitors:

  • Raccoons: Rabies, Giardia, Leptospirosis, Racoon Ascarid roundworm

  • Rats & Mice: Leptospirosis, Salmonellosis, E. coli, Shigellosis, Hantavirus, Rat Bite Fever

  • Coyotes: Distemper, Canine Hepatitis, intestinal parasites

  • Stray Cats & Dogs: Parvovirus, Distemper, Leptospirosis, Rabies, Toxoplasmosis, intestinal parasites

Scavenger poop next to building. Sometimes we find these droppings every few feet for the entire length of the collision risk area.

All of this activity also leaves behind a big mess. Besides having to pick up dead birds on a daily basis, maintenance workers are also left with the droppings and bird parts left behind by scavengers. It can add a lot of extra work and expense to the maintenance budget, in addition to the negative impression it leaves on both employees, occupants and visitors.

This woodpecker was either injured or killed by colliding with a window and then scavenged by another animal.

How to Reduce Bird Collisions by 95%

By partnering with the experts at Wild Goose Chase, you can ensure that your bird conflicts are managed humanely, effectively and on an ongoing-basis, so potential health and safety risks like window collisions are eliminated before they can turn into a bigger problem.

Our biologist-led teams have deep expertise in both bird behavior and window collision prevention. Our Window Collision Risk Assessments include a full evaluation of your building and the surrounding habitat, two or more weeks of bird collision surveys, and a full report determining your highest risk areas, along with recommendations for solutions, like Feather Friendly®.

With a durable, discreet and aesthetically pleasing design and up to 95% reduction in collisions, the Feather Friendly system is an effective way to make your building safe for birds and people.

Contact us for a Window Collision Risk Assessment

Feather Friendly installed on a transparent reflective glass walkway.

Wild Goose Chase, Inc.


9955 S. Virginia Ave
Chicago Ridge, IL 60415

(708) 529-3858 phone
(708) 907-3195 fax

© 1998 - 2021

Migratory Bird Management

Wisconsin Branch

21275 Gumina Rd.

Brookfield, WI 53072

(414) 336-2382 phone

(708) 907-3195 fax

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