Cassin's Auklet is a small seabird that breeds on islands along the Pacific coast of North America. It dives for small crustaceans and nests in burrows.
It is grey overall, with a small white mark behind the eye, a compact body, and a short, thick bill.
It dives for krill, copepods, and other small prey, and breeds in burrows on islands.
An extinction-risk assessment has not been added yet.