The chotoy spinetail 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
South-central South America
Typical Environment
Occurs from eastern Bolivia and southwestern Brazil through Paraguay and northern to central Argentina, and into Uruguay. Prefers riparian scrub, gallery forests, marsh edges, and second-growth thickets, often with thorny shrubs or reeds. Common in the Chaco and Pantanal regions and along the Paraná–Paraguay river systems. It typically stays near water but also uses drier scrub and open woodland edges with dense understory. Human-modified habitats with hedgerows and overgrown pastures are also used where cover remains.
Altitude Range
Sea level to 1200 m
Climate Zone
Subtropical
Ease of Keeping
Beginner friendly: 1/5
The Chotoy Spinetail is a monotypic member of its genus and is a typical ovenbird (Furnariidae) specialized for life in dense riverside thickets. Its name comes from its ringing two-note call that sounds like “cho-toy.” It forages low in shrubs and reeds, using a long, spiny-tipped tail for balance as it creeps through vegetation. Pairs often remain together year-round and are notably faithful to riparian territories.
At Arroio Grande, Rio Grande do Sul, Brazil
Temperament
active and skulking
Flight Pattern
short rapid wingbeats; low, darting flights between cover
Social Behavior
Usually seen singly or in pairs, often maintaining year-round territories along watercourses. Forages close to the ground or mid-level in dense vegetation, flicking and fanning the tail for balance. Nests are typically bulky and placed in thick shrubs or reeds, constructed from fine sticks and grasses. Parental care is biparental.
Migratory Pattern
Resident
Song Description
A loud, ringing two-note phrase that sounds like “cho-toy,” repeated at regular intervals from a semi-exposed perch. Also gives sharp chips and scolds when alarmed and a fast, chattering series during territorial exchanges.
