You know, maybe the running over the bird thing isn't so far fetched - in a manner of speaking. I don't mean running over small animals or nonsense like that. No, I'm thinking more along the lines of bug build up. like a swarm of some sort of bugs. I don't know if you could build up enough bug guts in your filters to have an effect in an average LFS race, but if it was possible, then it might ought to be considered, especially if there's going to be night time racing.
LOL in the 1800's a base ball game got called because it rained. It rained -
Fish! One of those weird weather phenomena things I guess.
Maybe on the fern bay courses we could have like a waterspout sling a bunch of fish all over the track. Or Melon sized Hail!
I don't know, I think the original posted idea of having birds flying in the background is a pretty good idea though. not like some sort of bird sanctuary, but something that would be appropriate and a like sporadic occurrence.