shadow on the sidewalk

In high noon sun I spotted an insect by its shadow on the sidewalk, keeping pace. It took me several seconds to find the actual creature, chugging along a couple of feet in me, sturdy, oval and grey like a bullet with fins. It shook with effort as it flew, wobbling, climbing and dropping as if the air were a rugged path cut through uncertain terrain. And who knows, maybe it is. I'll never experience the air the way that insect does, never struggle to keep myself suspended above the ground, transposing a line in shadow along an unspooling concrete surface. That's one for the bugs.