We always thought of Robins as birds who are the harbingers of spring. On the other hand, we’ve seen Robins in the middle of winter. We saw them today.
I realize that you technically can’t call a Robin a Sunbird. There is a species of Sunbird. It’s a small tropical forest bird. And you could call a person who travels from hot, humid parts of the country to cooler parts a sunbird—sort of the opposite of snowbirds; those who migrate from the cold north to the warm south in the winter months.
And so, I think you could call the Robin a sunbird—sort of. They’ll stick around all winter as long as the berries hold out.