While they are defined by their lack of regard for others, this group overlaps with White Trash. They wake you up with their crappy music and they often have loud voices.
You probably have at least one within a block of where you live or maybe you work with one or more. My condolences.
They have the opposite of King Midas's touch, which turned everything to gold. Everything Shit Birds touch turns to shit. God help you if some sit near you in a restaurant. They will either talk loud to each other or will have cell conversations while you try to have a relaxing dinner.
The worst thing is to have a group of them sit near you in a movie theater. Forget about enjoying the movie unless you either move to faraway seats.
Everyone knows at *least* one shit bird. You can readily make a list of shit birds you know or, at least, hear some from a bit of a distance. It is really too bad.