"This podcast is supported by linked in learning. We're all at different places in our careers. Some of us are just looking for a job. Others are trying to get promoted manage a team or do something new wherever you're at linked in learning has more than thirteen thousand courses taught by industry experts to help you succeed in your own way, anytime anywhere. It features. A vast range of business tack and creative skills. Employers are looking for visit linked in learning dot com slash learn for free to get a month free and to keep learning in all the career moments that matter to you. This is scientific Americans sixty seconds sites. I'm Christopher Dodd Yata. The hardest part of chasing monkeys through the jungle isn't the snakes this next. They are not going to attack you if you don't have that with them. It's simply keeping up with the monkeys. They are jumping from Wendy do another threes. So they don't care if the landscape is equal to leave. There is a rear Jose Domingo or Donas Gomez. He's a Primatology said the German primate center in gutting in the reason, he was pursuing thirty five spider monkeys through the rainforests of southern Mexico was to record their Winnie's. By analyzing more than five hundred calls. He found that when a monkey was separated from the group by more than forty meters or one hundred thirty feet it produced a lower pitched call. Then when the same monkey was nearby the group. Donas Gomez thinks the pitch toys may be because lower frequency calls are better suited to travel long distances through dense jungle the findings are in the journal plus one or Donas Gomez also found that other spider monkeys responded back more quickly when they heard one of the low pitch calls compared to a regular Winnie. Perhaps he says because there's something about the deeper calls that really gets the attention of eavesdropping monkeys. It's a relatable feeling for any human primate. Who's heard a crying baby? Thanks for listening for scientific American sixty seconds science. I'm Christopher Don. Yata?"