Guenon Hybrid monkey in Gombe National Park. By using mitochondrial DNA found in the monkeys’ feces, Researcher Kate Detwiler discovered that the entire existing monkey community in Gombe traced back to female red-tailed monkeys. According to Detwiler, red-tailed monkeys already existed in Gombe National Park when male blue monkeys entered the region in search of a new home. The female red-tails, in a very rare occurrence, mated with the male blue monkeys, even though they are a different species. This is BIG news, and though Gombe is an isolated forest habitat with this hybridization only occurring there, it helps us to better understand how hybridization happens in primates overall and how genetic material transfers between species in the real world!