A family friend runs a cabin/campground in the mountains of NW Arkansas. She fills her multiple hummingbird feeders with a home-made sugary recipe (no red dye of course) every morning. Up to 5 quarts a day. (!) Being "buzzed" while refilling is part of the fun, she says. She watches them line up in nearby trees and wait thier turn to feed. And, if someone takes too much time feeding, watch out. Fights are quite common, violent, and very fast. Don't blink.