The Mariana Crow is black with green and blue gloss across its feathers. Its native range includes Guam and Rota, and it searches for food from forest trees down to the ground.
Its black head and neck have a green gloss, while the back, wings, and tail have a bluish gloss. Pale gray feather bases can give the neck a slightly ragged look.
It forages from the forest canopy to the ground and takes a varied diet that includes invertebrates, reptiles, bird eggs, fruit, and seeds.
An extinction-risk assessment has not been added yet.