The Problem of Black Tipped Tails

One of the curious quirks of research, and the salvation of many a graduate student, is that it is possible to design a study to ask one question and then be led to a valid answer to a different question. Powell's convictions about the effect of raptor predation on the numbers of weasels in ecological time stimulated him to design a series of simple, elegant experiments with trained red-tailed hawks. They produced a legitimate answer to a long outstanding question in a different field...