then we hit a double play of Berwick and Chomsky to establish the prior belief that its "only us" who speak, so that we can show how other researchers (Cheney and Seyfarth) observed a group of Vervet Monkeys and their behaviors with regard to certain sounds... "one recorded vervet vocalization made vervets look up, presumably for eagles; another made them look down, presumably for pythons; and a third sent them running up into the trees, a good defense against approaching leopards. Young vervets sometimes use these calls faultily, perhaps sounding a leopard alarm for a warthog. But they get better as they grow up. They learn."
and a quick spattering of different vocalization/responses
"A newer generation of scientists has been trying to understand bird vocalizations. The alarm calls of Siberian jays can be said to have been partially translated. One of their screeches indicates a sitting hawk (which prompts other jays to come together in a group), another a flying hawk (jays hide, which makes them difficult to spot), and a third a hawk actively attacking (jays fly to the treetops to search for the attacker, and possibly flee). When cheery birds known as tufted titmice make a piercing sound, other titmice may respond by collectively harrying an invading predator. Some birds even lie. Fork-tailed drongos—common, innocuous-looking little dark birds that live in Africa—sometimes mimic the alarm calls of starlings or meerkats. Duped listeners flee the nonexistent threat, leaving behind a buffet for the drongo."