That's quite a shiner -- but Max Bratman isn't any worse for the wear!

Christina Aguilera's 3-year-old son with ex-husband Jordan Bratman was recently photographed sporting a black eye.

An insider close to the singer, 30, explains that little Max fell while chasing squirrels at the park.

"Any reports stating she isn't a good mom are incorrect," the source tells Us Weekly. "The reports are actually disgusting. Christina is an amazing mom. Max is a happy playful and active boy who has a loving and safe home."

After five years of marriage, the Grammy winner and Voice coach filed for divorce from Max's music producer dad Jordan, 32, in October. Their divorce was finalized in April.