This morning I was looking outside the window at a hummingbird sitting on her feeder, drinking. We have at least 5 different hummingbirds that drink at this feeder, so it is a busy one. She flapped her wings and tried to fly away. But the freezing fog had made the little ring around the feeder where she stands wet, and her feet froze to the feeder!!! She flapped and flapped, leaning backwards. She couldn't get her feet unstuck. She tried 3 times to fly away. I was horrified. I thought a moment, then started running some warm water that I thought I could fill a glass with to pour over her feet (to unstick them). Then I looked out and she finally got her feet unstuck and flew away. This is my first winter feeding hummingbirds through the winter. I have been thawing out the feeder when it fills with ice. This morning it was just cold enough to freeze the dampness on the feeder but not freeze the feeder's sugar water apparently.