Short silence, presumably while the Skylane pilot questioned passengers on the transmission.
Skylane: “Eight Seven Charlie, say again?”
Tower: “Skylane Eight Seven Charlie, cleared for the approach; caution, waterfall in the area.”
Again, short silence.
Skylane: “Ah, cleared for the approach, but what do you mean by the waterfall caution?”
Tower: “Waterfall, you know: Ducks and geese…Waterfowl.”