Bug swarms (and accompanying swarms of swallows)
Last nite I was driving home (across the McKees Rocks Bridge near Pittsburgh, for those of you who know where that is) and first I noticed a very happy swarm of swallows diving and swooping.
When we stopped at the light, I realized that there were many little bugs around my car...just flying around and bumping into the car and stuff. As I sat there watching the swallows, I noticed what looked like mini tornados...kinda grey and off in the distance...but, the weather was nice and not breezy at all.
When the light changed and I drove closer, I realized that these were not tornadoes (of course) but HUGE swarms of bugs all flying in circles together forming a tall column several stories high! There were probably 4 or 5 of them that I could see from the bridge. What do you think was going on?
I wanted to run home and give the bats that live in my woods directions to the bridge! ;-) There were just too many bugs even for the dozens of swallows that were gathering.
Thanks for any info you can provide.