Yeah, hummingbirds are super aggressive. It is kind of cute and kind of scary at the same time. A territorial hummingbird will think nothing of dive-bombing you out of nowhere, or buzzing your head a few times until you get the message and back off. They can come at you so quickly that you won't know what they are until they zoom past you. You just hear this loud buzzing sound and see a large object dart just past your face. At first it seems like a monstrously proportioned bumblebee, until you look back and realize it's a hummingbird.
In re native plants, it is possible to grow a quasi-traditional grass lawn using native grasses, like Buffalograss. It will look like prairie grass, and not necessarily like the archetypal, deep-green fescue patch. But if you're living in a drought-prone area, you really shouldn't be growing thirsty, exotic grass lawns in the first place. It's bordering on socially irresponsible in certain parts of the country (Southern California, I'm looking at you).
In re native plants, it is possible to grow a quasi-traditional grass lawn using native grasses, like Buffalograss. It will look like prairie grass, and not necessarily like the archetypal, deep-green fescue patch. But if you're living in a drought-prone area, you really shouldn't be growing thirsty, exotic grass lawns in the first place. It's bordering on socially irresponsible in certain parts of the country (Southern California, I'm looking at you).