This video was shot almost a year ago. The drone made a pass over the church and I saw a bird flying straight at it. I thought, "Oh he can't be stupid enough to fly into the drone." Well he was! He took out half of the right rear propeller.
I brought the drone back towards the launch point and was preparing to descend when the other half of the blade came off. You can see and hear the blade eject and fall into the trees in the video.
After the ejection the drone did an uncommanded yaw to the left. I brought it straight down and was going to try to land it on its gear but as you can see it started buffeting as it got close to the ground so I brought it back up and hand captured it.
After I put the drone down, I inspected it for any additional damage. The arm that had lost the blade was cracked all the way through right at the base of the hinge fitting. So it actually flew with half a propeller and the only thing holding it on was the wires for the Motor and the Navigation LED.
I was able to find the half of the blade that came off when the bird hit it. I looked extensively for the half that came off over the trees but didn't have any luck. Amazingly, the bird flew off seemingly unharmed. He may have died from his injuries later but I'll never know for sure.