What my lil buddy saying?

[u/tattoocyan]

I feed a group regularly and they follow me around occasionally wanting nuts. This is a juvenile who is the most comfortable with me and gets very close. Today I ran out of nuts and they wanted more and followed me out of the park, this juvenile was basically next to me the whole time then did this at the end before giving up. Does anyone know what these vocalisations mean?

[u/PetitAngelChaosMAX]

It’s using a human charming technique to get more peanuts