Family Tyrant-flycatchers (Tyrannidae)

Least Concern

Ash-throated Casiornis (Casiornis fuscus)


Taxonomy

French: Casiorne à dos brun German: Braunrücken-Röteltyrann Spanish: Burlisto gorjigrís
Taxonomy:

Casiornis fusca

P. L. Sclater and Salvin

, 1873,

Bahia, Brazil

.

Sometimes regarded as conspecific with C. rufus, but differs in its buffy-grey vs pale foxy-rufous throat and breast (3); whitish vs paler foxy-rufous belly to vent (2); buff-tinged greyish vs foxy-rufous mantle and back (ns[2]); buff-fringed grey-centred vs largely rufous secondaries and tertials (3). Monotypic.

Distribution:

NE Brazil S of Amazon, from lower R Tapajós E locally to Belém area and to Paraíba and Pernambuco, and S to NE Mato Grosso (upper R Xingu drainage), N Goiás and NW Minas Gerais.

Descriptive notes

18 cm; 19·5 g. Plumage is largely rufous above, becoming dull sandy brown on back; wings dusky, broadly edged with rufous to buff, more rufous on shoulders; tail rufous;... read more

Voice

Song is unknown. Call is a short, decisive "tsip!", repeated at intervals.

Habitat

Caatinga woodland and more heavily wooded cerrado; also campina... read more

Food and feeding

Perches erect and alert, with crown feathers often raised into bushy crest. No other published information; probably sallies for insects.

Breeding

Virtually no published information, but an active nest was found in Jan in Piauí.

Movements

Partial migrant: during the dry season, Apr–Oct, there is a marked westward expansion from... read more

Status and conservation

Not globally threatened (Least Concern). Uncommon to locally fairly common. Not well known. Both caatinga and wooded cerrado subject to increasing human... read more

Recommended citation

Scholes, E., Boesman, P. & Kirwan, G.M. (2018). Ash-throated Casiornis (Casiornis fuscus). 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 https://www.hbw.com/node/57494 on 13 December 2018).