The birds were killed by a semi truck?
Who was the stoner who came up with this “explanation”?
Not impossible. I was zipping down a country road once, much faster than I should have been, and a large flock of sparrows made a tactical error and swooped right down in front of me. I plowed right through them and still remember the tiny "pop pop pop" sound of all the ones I wiped out in the encounter. I could see them falling to the ground in my read view mirror. I must have taken out at least a dozen with my little car. It was sad.