Family Tyrant-flycatchers (Tyrannidae)


Strange-tailed Tyrant (Alectrurus risora)


French: Moucherolle à queue large German: Rotkehl-Schleppentyrann Spanish: Yetapá acollarado

Muscicapa risora


, 1824,

Rio Grande do Sul, Brazil


Formerly placed in monotypic Yetapa, on basis mainly of exaggerated tail and elongated hallux; but plumage pattern very similar to that of A. tricolor, with which it shares highly modified outer rectrices and numerous other derived features unique within the family. Monotypic.


S Paraguay (S from Presidente Hayes) and NE Argentina (E Formosa and Corrientes, rarely Chaco and Misiones; formerly S to Buenos Aires); no recent records from S Brazil and Uruguay.

Descriptive notes

20 cm, breeding male 30cm including tail. Male is mostly black above (feathers fringed brown in fresh plumage), with grey on rump, whitish scapulars, whitish tips of wing-... read more


Male call unknown; female call, when young close, is a repetitive, soft and weak whistled “thee-uu... read more


Savannas, marshes and damp grasslands; also shrubby areas. Below 500 m.

Food and feeding

Insects. Perches conspicuously atop a tall grass stem, post or shrub, sallying both into the air and to grass for prey. Male flies slowly... read more


Eggs in Sept–Dec. Nest an open grassy cup, lined with feathers, hidden on or near ground; in Formosa, Argentina, built in tall... read more


Resident; possibly a partial migrant in S part of range.

Status and conservation

VULNERABLE. Rare to locally uncommon or fairly common. Estimated global population at least 10,000 individuals continuing to decline, and no recent reports from a large... read more

Recommended citation

Farnsworth, A., Langham, G. & de Juana, E. (2019). Strange-tailed Tyrant (Alectrurus risora). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 7 December 2019).