Buzzed by a Red-winged Blackbird

When I pulled over at one of the sloughs SW of the city, on 19 July 2013, I noticed something that I'd never seen before at this particular wetland area - a Great Blue Heron. While I was watching, one of the local Red-winged Blackbirds started harassing the Heron, flying down close to its head, making the Heron duck over and over again. Many birders have experienced this themselves. If you accidentally get close to a Red-winged Blackbird's nest, the male doesn't hesitate to buzz you.