Create an image of two swallows in mid-flight, designed to look like ancient Greek or Roman statues. The birds should have the texture and appearance of weathered marble, with graceful wings outstretched. Capture the elegance and movement of the swallows as they soar through the air, with detailed feathers and streamlined bodies. The overall style should be classical and sculptural, with the timeless, antique feel of a masterpiece carved from stone