This is the largest number of known instances for this species on any single day. The previous was 11 on an autumn day.
CenturyLink Center Omaha
The first instance was a temporarily disabled female at the north end of the west wall. It heard a nearby male calling and quickly flew to the ground vegetation before a photograph could be taken. There were three dead warblers further to the south. All of these and other recent fatalities despite what is ineffective decals placed upon the windows.
There was also a dead Eastern Wood-Pewee present.
At the mid-day visit, there were two more dead yellowthroats.
Holland Center for Performing Arts
It was completely amazing to see five live yellowthroats at this glass building. They were all disabled along the south wall in the courtyard. Birds in this area within the building often have a difficult time finding their way to escape, and often strike the glass again in their attempt to fly away.
There was also a dead Common Grackle at the same place.
Curtis National Park Service building
Window-strike instance No. 12 was located on the east side of the Curtis Midwest Region National Park Service headquarters along the Omaha riverfront.
There is a website where this quote was found:
"The National Park Service was dedicated to designing a building that exhibited its philosophies about the environment."
This statement certainly does not convey the reality of the building in regards to known deaths of migratory birds.