But the Scythians, whenever they saw that the Persians were disquieted, then in order that they might remain a longer time in Scythia and in remaining might suffer by being in want of everything, would leave some of their own cattle behind with the herdsmen, while they themselves rode out of the way to another place, and the Persians would come upon the cattle and take them, and having taken them they were elated at what they had done. 131. As this happened often, at length Darius began to be in straits; and the kings of the Scythians perceiving this sent a herald bearing as gifts to Darius a bird and a mouse and a frog and five arrows. The Persians accordingly asked the bearer of the gifts as to the meaning of the gifts which were offered; but he said that nothing more had been commanded to him but to give them and get away as speedily as possible; and he bade the Persians find out for themselves, if they had wisdom, that which the gifts were meant to express. 132.