Our snow is gone, but I heard on bird note how the Anna’s hummingbirds survive. One morning the temperature here was 14 degrees F, and then the hummingbird was out as soon as it was light. Dive bombing me as I brought out the feeder after thawing it. Bird note says that they can slow their metabolism, like a mini hibernation, during the freezing temperatures. This helps them expand their range and get a jump on the humming birds that go south.