If hungry, the mostly herbivore tortoises would eat anything, even the carcass of others.
In the southern atolls they find less food, than in the inner islands, therefore they often get supplement to their habitual diet.
A Madagascar Turtle-dove has learnt not to go too close to a reptile the next time. The bird managed to escaped with only losing a few feathers, which clearly ended in the mouth of this giant.
Photo and source: SIF