A fleeting shadow on the wall, what do you make of that?
Another and another joins this swirling mass of bat.
Fortuitous destruction, they swarm across the lake.
What an impressive undulating constant stream they make.
They go to eat mosquitos in the farther fields they roam,
leaving only guano here closer to their home.
The wellbeing they foster, I fear is far afield.
Here at home there’s not a single benefit they yield.
They sleep by day then hurry off on nightly winged weavings,
leaving me, with broom and scrub brush, dealing with their leavings.