He waited still, watching, his heart in his mouth.
Could it have been the breeze?
But there was no breeze.
Startled, but discreetly motionless, he fixed his eyes upon the leafy clump, still waiting.

Presently it stirred again, very perceptibly now, then moved, clumsily and uncannily, and with a slight rustling of its leaves, along the bank of the stream!.