The monkeys' "ultra-yodels" had frequency leaps that were five times larger than human frequency changes, often exceeding ...

black-capped squirrel monkeys and Peruvian spider monkeys. The spider monkey was the best yodeler, managing around four octaves, Dunn said. The researchers also studied the larynges of dead ...

Peruvian spider monkey (Ateles chamek). Credit: Dr. Jacob Dunn, Anglia Ruskin University Black-capped squirrel monkey (Saimiri boliviensis). Credit: Dr. Jacob Dunn, Anglia Ruskin University Lead ...

black-capped squirrel monkeys and Peruvian spider monkeys. The spider monkey was the best yodeller, managing around four octaves, Dunn said. The researchers also studied the larynges of dead ...

black-capped squirrel monkey, and Peruvian spider monkey. Monkeys, scientists found, had a secret yodelling weapon; the primates possess special anatomical structures in their throats called vocal ...

These included the black and gold howler monkey, black-capped squirrel monkey and Peruvian spider monkey. New World monkeys, whose range stretches from Mexico to Argentina, were found to have ...

Yodelling monkeys can produce far greater frequency jumps than humans due to special structures in their throats, research suggests. Scientists inves ...

black-capped squirrel monkeys and Peruvian spider monkeys. The spider monkey was the best yodeller, managing around four octaves, Dunn said. The researchers also studied the larynges of dead monkeys ...