It arrived quietly. We thought it was a shadow on the underside of a broad green leaf by the water trough. On close examination we realized it was not one thing, but many tiny creatures surrounding and protecting their queen. Each wasp had three yellow horizontal stripes over a suit of black. The swarm hung on to the underside of the leaf and up the stem through strong breezes and cool nights. Scouts ventured out by day. We knew they wouldn’t stay, couldn’t stay. In the late afternoon, second day, they disappeared. I wondered about my part in this infinitesimal action of nature.