Below is a clip from the opening of Raiders of the Lost Ark (1981). The scene is set deep within the jungles of South America, and the sound department is ensuring that we know it’s a jungle. The key part starts around 2:12 in the video:
(Side note: this clip is from a pan-and-scan Laserdisc copy of the film, which simultaneously horrifies and amuses me.)
Here’s another sound clip, of the more stereotypical version of the sound heard in films:
Okay, show of hands. Who actually knows what that jungle sound is? Hint: it’s not a monkey.