Bluebottle

Who dips, dives
swoops out of space,
a buzz in his wings
and sky on his face;
now caught in the light,
now gone without trace,
a sliver of glass,
never still in one place?

Who’s elusive as pickpocket,
lord of the flies;
who moves like a rocket,
bound for the skies?
Who’s catapult, aeroplane,
always full-throttle?
Sky-diver, Jumping Jack,
comet, bluebottle!