This is why I don't get as much work done as I'd like. I thought I'd take a quick look at Google News (just to know what's going on in the world), and I saw saw this article: Hummingbirds Use Their Beaks As Weapons. I don't know why I clicked on it, except that Hummingbirds are so beautiful. I only glanced at the article, and then I wondered if Hummingbirds can open their beaks. So I did a search on that.
In case you're wondering...yes, they can. Here's a picture.