I'm not sure what it means and I wish I had kept track of when they returned other years. But this is a little strange. It seems they normally come back in March. We're either going to have a very long hot summer or we'll get snow in March and April. Screwy weather. And no, it's not because of global warming. It's because of an El Ninyo off the Pacific Northwest Coast which brings warmer than normal weather to this part of the country. The ski resorts are hurting. In part, it could be because of a warming trend. But then how do you explain unseasonably cold and snowy in other parts of the country.
Either way, I think it's time to start planning the garden.