Good find.
I see the beast is around 25 lbs. According to Wiki, a Minneapolis to Chicago flight should be well out of a Griffon vultures natural range.
Diagram of range here:
https://en.wikipedia.org/wiki/Griffon_vulture#/media/File:Gyps_fulvus_dis.PNG
Hitting a bird at 30,000+ feet altitude is almost as unexpected as sailing the North Pacific and hitting a container which has come adrift from a container carrier ship.
Ruin your whole day (or night)!
http://gcaptain.com/how-many-shipping-containers-lost-at-sea/
“For the combined six year period from 2008 to 2013, the WSC estimates that there were 546 containers lost on average each year, not counting for catastrophic events. Counting for catastrophic events, an average of 1,679 containers were lost each year over the six years.”
