Two grandsons of the god Ndengei killed a favorite bird of that god and rather than apologizing, defied Ndengei to do his worst. In their fortress, the rebels withstood Ndengei's armies, but they were finally overwhelmed when Ndengei caused the earth to be flooded. They prayed to another god for direction, and they were brought canoes. [Kelsen, in Dundes]
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References: Dundes, Alan (ed.) The Flood Myth, University of California Press, Berkeley and London, 1988.