For what it's worth, I had a VERY near miss with a bird when I was going 20mph. The sound was off, since I was going faster than 17mph.
I would have though that a bird's eyesight would have prevented this, but these days nobody takes personal responsibility anymore. Not even the birds.
Hers: Cayenne Red SL
ECOtality Blink WE-30K Level 2 charging station.
His: Tesla Model S - 85