Signs of spring?

Today brought an unexpected sight. Glancing out the floor-to-ceiling windows into the courtyard of the college where I teach, I saw what at first seemed to be livelier-than-usual mourning doves in the hawthorn trees. Not so. The movements were those of a sizeable flock of robins scarfing down the hawthorn fruit. Each tree held a number of birds, each bird seemingly intent on ingesting as many of the red berries as it could fit its beak around. Given the ice storm predicted for tomorrow, I'm glad the robins found our trees before the berries became ice cubes.