Very destructive bird poop.

[G1ABB]

Generally I don't leave bird muck on cars for any length of time.

How the hell did this happen though, may of been on a couple of days but not parked in full sun for any length of time and not a great deal of it.

Luckily it's on a DD but never seen anything this aggressive before.

[Tim662]

No way that was just bird poo. Anyone been burning anything nearby? Looks very much like something that was on fire has landed on the bonnet and continued burning on there.