On Cousin Island, it forages on small animals exposed as Hawksbill Turtles dig their nests. It has also been seen feeding on turtle eggs.
Its plumage is black and white.
When Hawksbill Turtles dig nests, insects and other small invertebrates are exposed in the soil and leaf litter. Magpie-robins forage nearby for these animals.
On Cousin Island, magpie-robins fed on Hawksbill Turtle eggs in six instances during the 2023/24 nesting season. The eggs were usually already damaged; in one case, a female pierced an intact egg.
An extinction-risk assessment has not been added yet.