The Great Nicobar Serpent Eagle is a small serpent eagle collected on Great Nicobar Island. Adults have a dark crown, grey cheeks, and pale underparts; specimen stomachs contained lizards and small mammals among other prey.
Adults have dull brown upperparts with a slight coppery sheen. The crown and long nape feathers are black, the cheeks smoky grey, the throat buffy white, and the underparts much paler and unspotted.
It is a forest raptor that takes small animals. Stomachs from specimens collected in 1901 contained lizards, rats, a small bird, and a pigeon.
An extinction-risk assessment has not been added yet.