Geospiza fortis lives on the Galapagos islands along with fourteen other finch species. It feeds on the seeds of the plant tribulus cistoides, specializing on the smaller seeds. Another species, G. magnirostris, has a larger beak and specializes on the larger seeds. The health of these bird populations depends on seed production. Seed production, in turn, depends on the arrival of wet season. In 1977, there was a drought. Rainfall was well below normal and fewer seeds were produced. As the season progressed, the G. fortis population depleted the supply of small seeds. Eventually, only larger seeds remained. Most of the finches starved; the population plummeted from about twelve hundred birds to less than two hundred Under the given scenario which would be the probable outcome?
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