The tooth-billed wren is a species of bird in the family Troglodytidae. It is found in Bolivia and Brazil.
Region
Western Amazon Basin
Typical Environment
Occurs in lowland tropical rainforest canopies of western Brazil (especially Amazonas, Acre, and Rondônia) and adjoining northeastern Bolivia (e.g., Pando and Beni). Prefers tall terra firme forest with a closed canopy, but also uses forest edges, light gaps, and vine tangles. Frequently forages in the upper canopy and subcanopy, often 20–35 m above ground. It may also appear along riverine forest and tall secondary growth where canopy structure is intact.
Altitude Range
0–900 m
Climate Zone
Tropical
Ease of Keeping
Beginner friendly: 1/5
A canopy specialist, the tooth-billed wren spends most of its time high above the forest floor—unusual for a wren. Its name refers to a tiny tooth-like notch along the edge of the upper bill. It often joins mixed-species flocks and is more often heard than seen, delivering thin, high-pitched trills from the treetops.
Temperament
active and furtive in the canopy
Flight Pattern
short rapid wingbeats between branches
Social Behavior
Often travels in pairs or small family groups and commonly joins mixed-species canopy flocks with tanagers and woodcreepers. Forages methodically among leaves, epiphytes, and vine tangles. Nests are placed well concealed, likely high in vegetation; pairs are presumed monogamous during the breeding season.
Migratory Pattern
Resident
Song Description
Song is a series of very thin, high-pitched trills and sibilant whistles that carry from the canopy. Calls include sharp, faint tiks and short squeaky notes, often given while moving with flocks.
Plumage
Plain, smooth gray overall with slightly darker wings and tail, and paler gray underparts. Throat often a shade paler; subtle pale lores and a faint, diffuse eye line may be visible. Tail often held slightly cocked; plumage lacks strong barring or spots.
Diet
Feeds primarily on small arthropods such as beetles, caterpillars, spiders, and other insects gleaned from leaves, twigs, and bromeliads. Will probe clusters of dead leaves and vine tangles for hidden prey. Occasionally sallies short distances to snatch flushed insects from the air.
Preferred Environment
Forages mainly in the upper canopy and subcanopy of terra firme forest, especially around vine mats, epiphytes, and canopy gaps. Also uses forest edges and mature secondary growth with tall trees.
