Ammon is not party to the history of these raids on the king’s flocks, and so he works to find a solution. One, which is simple, is that they go gather the flocks and bring them back. Either the other servants had never thought of such a thing, or they knew that it would simply result in the intruders scattering them again. In any case, they do not think to gather the flocks, but Ammon, who has no knowledge of the history of events, does so.
They are able to assemble at least a reasonable number of the scattered animals, but the story is not over.