When a bird hits the glass, what to measure?

The windows give fans a view of downtown.
Conservationists have raised concerns that a great number of birds will be killed when they try to fly through the glass walls on U.S. Bank Stadium. A bird study could be announced later this month.
Tom Baker | File for MPR News

The Minnesota Sports Facilities Authority is expected to announce later this month a study on whether the glass on the new Vikings stadium is harmful to birds.

Conservationists have raised concerns that a great number of birds will be killed when they try to fly through the stadium's glass walls. Stadium officials so far have been unwilling to add a coating to make the glass more visible to birds.

Christine Sheppard, a bird collisions campaign manager for the American Bird Conservancy, discusses how a study could be set up.

Create a More Connected Minnesota

MPR News is your trusted resource for the news you need. With your support, MPR News brings accessible, courageous journalism and authentic conversation to everyone - free of paywalls and barriers. Your gift makes a difference.