Complex sentence: Researchers say its repertoire of 38 distinct sounds is unusually sophisticated, conforming to grammatical rules and able to express curiosity, fear, dismay, playfulness, warnings, joy, and calls to young.
Split into simpler sentences: Researchers say its repertoire of 38 distinct sounds is unusually sophisticated, conforming to grammatical rules. They are also able to express curiosity, fear, dismay, playfulness, warnings, joy, and calls to young.