Do birds get annoyed when they're eating roadkill and you interrupt them?

I was driving back from the Post Office an hour ago. A dead animal (raccoon I think) was in the middle of my lane, and a couple of good-size crows were feasting on the carcass.

When my car got close – maybe 40 feet away – the crows launched themselves from the pavement into the air to avoid being crushed themselves.

My question: were the crows pissed off at me for interrupting them? Are their brains sophisticated enough to be annoyed?