Sawllows...can it be?

Yesterday, February 26th, I was sitting outside and all of a sudden several birds came swooping toward me, up and over the deck railing. One was heading right for my face and I flinched. As they veered off, I swear they were swallows! This is the earliest time of year I've ever witnessed them. These would be the early scouts who show up a few weeks before the hundreds yet to come. They're more than two weeks before I've ever seen them before. Indeed, there was a mild winter here with less cold and more rain than usual...but swallows in Februaary?!