I guess they are the original version of our "Snowbirds".... heading south for a respite from the cold. They'll head up north when appropriate. I just thought it odd to see them. I'm always on the lookout for new birdies in my area. I've seen only one male Cardinal and one male Western Tanager in 18 years. Guess I don't get out much!
(the Cardinals are found in multitudes just 25 minutes from my house... but not AT my house except for one guy a few years ago. )