Do not place feeders or flower beds too close to windows. Hummingbirds can travel up to 30 miles per hour and an impact with a window is usually fatal. Hummingbirds tend to become very territorial over 'their' flower patch or feeder and will want to rule over it with an iron claw. By providing perches you can give them a throne to rule from. Next time you are going to trim off the tip of a branch that has tiny dead twigs on it - leave it for the hummers to perch on.
Hummers always pick the littlest branch of all.
You will be rewarded with an opportunity to watch them preen, lick their beaks, and posture towards intruders. They will chase anything that comes into their area including butterflies, bees and other species of birds. They really are very big for their little, tiny, britches. Males prefer woodland edges, orchards, thickets, and hedgerows. Mated females prefer woodland streams and riparian areas.