The greater thornbird is a species of bird in the Furnariinae subfamily of the ovenbird family Furnariidae. It is found in Argentina, Bolivia, Brazil, Paraguay, and Uruguay.
Region
Gran Chaco and Paraná–Paraguay river basin
Typical Environment
Occurs in northern and central Argentina, Bolivia (lowlands), Paraguay, southern Brazil, and northern Uruguay. It favors dense riparian thickets, marsh and lagoon margins, gallery forests, and secondary scrub, especially where thorny shrubs and reeds provide cover. Often found along oxbow lakes, backwaters, and floodplains with scattered willows or other small trees. Readily uses disturbed habitats with dense undergrowth, including fencerows and overgrown ditch lines.
Altitude Range
0–1800 m
Climate Zone
Subtropical
Ease of Keeping
Beginner friendly: 1/5
The greater thornbird is a large thornbird of marshes and riparian thickets that builds bulky stick nests in thorny shrubs or small trees, often near water. Pairs frequently duet, delivering loud accelerating rattles that carry over long distances. They are year-round residents and may maintain several nests within their territory, repairing or reusing them across seasons.
Temperament
solitary and territorial
Flight Pattern
short rapid wingbeats over low cover
Social Behavior
Usually encountered as pairs that defend linear riparian territories. Both sexes build a large, domed stick nest with a side entrance, typically placed in thorny shrubs or small trees. Nests may be refurbished and reused; clutches are small and both adults participate in care.
Migratory Pattern
Resident
Song Description
A loud, accelerating series of harsh rattles and chattering notes, commonly delivered as antiphonal duets between pair members. Calls include dry scolds and sharp chips given from within dense cover.
