help me sex my baby guinea please

[goose2020]

Hi all, my Guinea Pig gave birth three weeks ago and I'm finding it difficult to figure out whether the little one is a girl or a boy. I took a few photos and was hoping someone on here could help? thanks in advance

 

[bpatters]

The picture needs to be much more of a close-up.

Also see https://www.cavyspirit.com/sexing.htm.