What is the simile in the flying machine?

In "The Flying Machine" by Ray Bradbury, a notable simile compares the beauty and grace of the flying machine to that of a bird. This comparison emphasizes the machine's elegance and the wonder it inspires, highlighting the intersection of human creativity and nature. Such imagery serves to illustrate the duality of innovation—its potential for both awe and destruction. The simile ultimately underscores the delicate balance between admiration for technological advancement and the inherent dangers it poses.