This is our Andrenid bee bank, on the north side of the pond. Since it is south facing, the snow melts earlier there than on the opposite side. We're hoping that the andrenid colony is still there, as it has been for at least a decade. The nearby willow (next photo) is a magnet for these bees as well as numerous other early appearing insects such as nomada bees, bee flies, various flies, some early sweat bees, etc.