Walking the trail in the dark, I heard clicking in the tree canopy. It took me a moment to recognize the sound as the call of a katydid. Usually heard in the heat of August nights, the katydids fill the forest with a raucous, rhythmic chorus of hundreds. Now, that cacophony has been reduced to the solitary clicking of one last katydid, a tenuous remnant of the fading summer. Chilled of by the October air, the rapid buzzing wings of August slowed to a succession of distinct clicks. In the crisp autumn night, as leaves drop from the treetops, one katydid hangs on.