Marbled Murrelet vs Aleutian Tern

The Marbled Murrelet and Aleutian Tern can be distinguished by their nesting habits and plumage. The Marbled Murrelet nests in coastal forests and has a more cryptic plumage, while the Aleutian Tern nests in colonies and has a distinctive white forehead and black cap.

Look for nesting behavior: Marbled Murrelets nest in trees, while Aleutian Terns nest in colonies. Plumage: Note the mottled appearance of Marbled Murrelets versus the white forehead and black cap of Aleutian Terns.

Marbled Murrelets have a mottled brown and white plumage that provides camouflage in forested nesting areas. In contrast, Aleutian Terns have a striking white forehead and black cap, with grey wings and a white body, typical of many tern species.

Marbled Murrelets are known for their secretive and solitary nesting behavior in trees, whereas Aleutian Terns often nest in colonies and associate with other tern species.

Marbled Murrelets nest in older coastal forests, while Aleutian Terns are found in open coastal areas and are known to breed alongside other tern species.