I'll have to think a bit to see if I can come up with something better than car alarms.

Two stories:
I lived in Alexandria, Virginia, just outside Washington DC. I was at a shopping mall once, and there was a really intense thunderstorm. A big crack of thunder went off, and every single car alarm in the parking lot went off. It was a symphony of honking, whooping and flashing lights. They eventually stopped or were turned off - until another barrage set them off again.

I worked in DC. One morning I was outside the building I worked in and hear car alarm noises coming from an area where no cars were parked. Up in a tree was a mockingbird which had probably spent a little too much time perched near parked cars.