Living in the Scoot Utopia

I was out walking my dog this afternoon when I spotted a dead bird:

Just a few feet away I spottted another...

Then another...

And another...

And finally, another...

All of these dead birds were along the sidewalk in front of this DST building at 9th & Washington.

I did not see any more once I stepped away from this building. How and why is DST killing these birds?