Tweet to protect your business

A short clip from a walk today at the Don Edwards San Francisco Bay National Wildlife Refuge. It's a pretty nice place to get some fresh air after work (not really actually it's smell ooze). This bird on the second part of the video wanted to intimidate me: I guess because of nidification time. I was a bit surprise and didn't catch the whole scene. I shot this video on a Flip HD, it was windy but I realize the mic work well in this condition.