My hamster is making new noises

[jukeboxmusic]

Hi all,

My hamster has started making noises in the past week or so i haven't heard him make before and i'm concerned. He is a Roborovski hamster. He doesn't appear injured or anything and i'm unsure what it is. The noises are very low squeaking noises and only happen from time to time. I've uploaded a couple of videos onto YouTube if someone can have a listen and help. You'll probably need to be right up the speaker to hear or be wearing headphones.

PS i know the video he is at his food, but he makes the noise everywhere.

Thanks

https://www.youtube.com/watch?v=5EOZouijG7A

https://www.youtube.com/watch?v=TEXAZJQd_xY