hummingbirds are awesome, beautiful, swift and terrible. they are among the most pugnacious, belligerant, feisty creatures on the planet. they'd wade right into a bfi fight thread and kick ass.
We get hummingbirds, it's pretty cool. I saw a hairy woodpecker on the feeder the other day, that was awesome.
My biggest problem right now is a psychotic robin. It keeps flying in to the windows, attacking its own reflection. The noise is annoying enough, but it smear dirt from it's feet all over the windows, front of the hose, back of the house, driver's side windows, passenger side windows, anywhere it can find a reflection. Plus it craps all over wherever it happens to perch (and below) right before it launches it's next attack - porch railing and deck, car mirrors/doors, you name it. I've deployed counter measures - they work a little. I hate that damn bird.