Merlin
Learn to identify the Merlin by ear. Master the "ki-ki-ki-ki-ki-ki" phrase and tell it apart from similar species.
What the Merlin sounds like
The Merlin is a compact, fast-flying falcon renowned for its energetic hunting style. Smaller than a Peregrine Falcon but larger than an American Kestrel, this raptor streaks low over open country and cityscapes alike, surprising passerines and shorebirds with explosive chases. Historically prized by falconers, Merlins have adapted well to human-modified landscapes, nesting in conifers, abandoned corvid nests, and even on building ledges.
“ki-ki-ki-ki-ki-ki”
How to tell it apart
Lessons featuring the Merlin
Ready to test your ear? Practice identifying the Merlin's sounds in this interactive in-app lesson.
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Where you'll hear it
Open forests, grasslands, coastal dunes, tundra, prairie potholes, city parks and downtown corridors during migration and winter.
Northern breeder arriving March–May, departing August–October. Migrants and wintering birds present September–April farther south.
Similar species
American Kestrel
Kestrel smaller with pale, rusty back and strongly rufous tail in males.
Sharp-shinned Hawk
Accipiter has rounded wings and longer tail with squared tip.
Peregrine Falcon (juvenile)
Much larger; broad chest and heavy wingbeats.