A research trip in July 2020 to Fregate Island, led by Dr Justin Gerlach,  discovered a giant tortoise attacking a baby bird. This is the first documented example of deliberate hunting in the wild by this species. Further information can be found on the links below:

https://www.theguardian.com/environment/2021/aug/23/horrifying-and-amazing-giant-tortoise-filmed-attacking-and-eating-baby-bird

https://www.bbc.co.uk/sounds/play/m000yyq1