Aleutian tern (left) and Arctic tern (right)

A diptych consisting of two images. On the left is an aleutian tern with a white spot on its black cap, a black beak, white wings, and black feet. It hovers above a field of purple lupine habitat. On the right is an image of two arctic terns with full black caps, orange beaks, and red feet. They hover over a field of vegetation.
Photo By/Credit
Lisa Hupp/USFWS
Date Shot/Created
Circa 2023
Media Usage Rights/License
Public Domain
Image
A side-by-side comparison of the physical appearances of the Aleutian tern (left) and Arctic tern (right).
Species
Onychoprion aleuticus
Sterna paradisaea
Subject tags
Birds
Migratory birds