About sparrow-sized, this seabird is entirely black with a short wedge-shaped tail. It flutters low over the sea to pick food from the surface and nests in colonies on rocky islands off western Mexico.
It is tiny and entirely black, with a relatively short, wedge-shaped tail.
Over the sea it flutters low over waves and takes food from the surface, seldom settling on the water to feed. It nests among rocks on islands, and is active around colonies at night.
An extinction-risk assessment has not been added yet.