What bird says teacher, teacher, teacher?

The bird calling teacher, teacher, teacher is an Ovenbird, a small warbler that walks the floor of big, closed-canopy forests across the eastern United States and southern Canada. The song is a string of loud two-syllable phrases, and each one comes out louder than the one before, as if the singer were marching toward you. Listen from mid-April into summer, even on hot afternoons. A similar chant that stays at one volume is more likely a Kentucky Warbler.

Listen: the likeliest bird

This mnemonic is about as settled as birding gets. Audubon's field guide writes the song as teacher, teacher, teacher. The Missouri Department of Conservation prints it with capital letters, TEACHer-TEACHer-TEACHer-TEACHer, and adds that every phrase is louder than the last. Don Hendershot, writing in the Smoky Mountain News, notes that the song is almost always described in two syllables, either teach-er or chur-tee.

Those two spellings point to the one real argument about this song: where the stress falls. Missouri puts the weight on the first half, TEACH-er, while chur-tee leans on the second. Audubon settles it diplomatically, noting that the emphasis varies from region to region. Every account agrees on the shape: short, loud, staccato phrases repeated back to back, building in volume. Plenty of birds repeat themselves. Very few get louder as they go.

Teach, teach, teach, and the song at dusk

In the southern Appalachians the words may not fit at all. Hendershot reports that across much of the southern breeding range, including western North Carolina, the more common song is a single syllable repeated: teach, teach, teach. So a loud, ringing teach from a closed-canopy forest in those mountains can still be your Ovenbird. He also flags a trap for anyone counting singers: neighboring males often sing in turn, the second starting the moment the first stops, so two birds can sound like one long song.

There is a third version, and it fooled Henry David Thoreau. Audubon describes a flight song, often given at night, that is a bubbling, jumbled series of notes ending in a familiar teacher, teacher. The Missouri guide notes that Thoreau knew the Ovenbird sang the teacher song but did not connect it with the warbling evening flight song, whose singer he called a night-warbler. If a tumbling warble pours out over the canopy at twilight and then lands on the word teacher, you have solved his puzzle.

Where and when you hear it

Ovenbirds want forest, and a lot of it. Audubon says they need large tracts of mature deciduous or mixed woods with a closed canopy to breed successfully, and the Missouri guide agrees. Hendershot calls the Ovenbird one of the most common woodland warblers of the Southern Appalachians and places its breeding range from eastern British Columbia to Newfoundland and through the eastern United States south to northern Arkansas. In Missouri the first birds arrive in mid-April and all are gone by mid-October, bound for wintering grounds from Mexico to northern South America and the West Indies.

You will hear far more Ovenbirds than you see. The bird walks the leaf litter with deliberate steps and its tail cocked up, picking insects off the ground and rotting logs, and its dark olive-brown back disappears in the shade. The Missouri guide adds that Ovenbirds often keep singing in midsummer, even on the hottest afternoons, when much of the forest has gone quiet.

Other birds that chant in two syllables

The closest match is the Kentucky Warbler, a bird of moist woods with dense, shrubby understory. Missouri's guide writes its song as a loud, two-syllable cherry-cherry-cherry-cherry, and Roger Tory Peterson rendered it tory-tory-tory-tory. On paper that is nearly the Ovenbird. The difference is in the volume: the Kentucky Warbler holds an even level from start to finish, while the Ovenbird grows louder with each phrase.

That same comparison brings in a third suspect. A Carolina Wren running through a two-part phrase can pass for a teacher at first, especially if you only catch a few repeats. Use the same test: if the phrases do not climb in volume, keep looking for another singer.

How to tell which one you heard

• Louder with every phrase: Ovenbird. The crescendo matters more than the exact syllables.
• Two syllables at an even volume: Kentucky Warbler, in damp woods with a thick, shrubby understory.
• A single repeated teach in the southern mountains: still likely an Ovenbird, since that is the more common song there.
• A jumbled warble over the trees at dusk that ends in teacher: an Ovenbird's flight song.
• Check the habitat: breeding Ovenbirds need large tracts of mature, closed-canopy forest, so a big unbroken woods is a strong hint.

If the singer stays hidden in the leaf litter, Warble can listen to the chant and name the bird from the sound alone.

Questions people ask

Warble is a game, not a field guide. Facts about birds on this page come from the sources above.