Watercolor portrait of Fox Sparrow (Passerella iliaca)

Fox Sparrow

Passerella iliaca
Uncommon Primary Territorial Song

Learn to identify the Fox Sparrow by ear. Master the "rich whistled phrases" phrase and tell it apart from similar species.

“chip, CHEW-cheew-cheew, chir-chew-chew”

What the Fox Sparrow sounds like

A rich, clear series of melodious whistles and trills, each phrase starting with a sharp note followed by descending or mixed notes.

How to tell it apart

Listen for: “rich whistled phrases”
Don't confuse with the Song Sparrow. Song more buzzy and less musical.

Where you'll hear it

Long-distance migrant. Breeds across the boreal forest of Alaska and Canada and in montane brushlands of the West. Winters mainly in the Pacific states, the Southeast, and Mexico.

Tangles of willow, alder, salmonberry, and other shrubs along streams, forest edges, and wet thickets in the breeding season; chaparral, hedgerows, and brush piles in winter.

Arrives on breeding grounds soon after snowmelt (Apr–May), rears one brood, then departs Aug–Sep. Peak migration across most of the U.S. in Mar–Apr and Oct. Winters Nov–Mar.

How to recognize it by sight

Fox Sparrows are big, sturdy sparrows with several very different regional looks: rusty Red birds, charcoal-brown Sooty birds, gray-backed Slate-colored birds, and Thick-billed birds with massive bills. Their vigorous two-footed leaf-scratching is often the shared giveaway.

Similar species

Fox Sparrow song FAQ

What does a Fox Sparrow sound like?
A rich, clear series of melodious whistles and trills, each phrase starting with a sharp note followed by descending or mixed notes. Listen for the "rich whistled phrases" phrase.
How do I tell a Fox Sparrow from a Song Sparrow by sound?
Song Sparrow: Song more buzzy and less musical.
When is the best time to hear a Fox Sparrow?
Arrives on breeding grounds soon after snowmelt (Apr–May), rears one brood, then departs Aug–Sep. Peak migration across most of the U.S. in Mar–Apr and Oct. Winters Nov–Mar.