Family Vireos (Vireonidae)

Least Concern

Olive-crowned Greenlet (Tunchiornis luteifrons)


Taxonomy

French: Viréon à calotte olive German: Olivscheitelvireo Spanish: Verdillo coroniverde
Taxonomy:

Hylophilus luteifrons

P. L. Sclater

, 1881,

Bartica Grove, Guyana

.

Hitherto treated as conspecific with T. ochraceiceps, its vocal distinctiveness unrecognized; differs in its olive crown with dull buffy-yellowish or sometimes rust-tinged forehead vs strongly rufous-washed crown throughout (2); and song, a repeated phrase of two slightly descending whistles, the second lower and longer than the first, vs a repeated drawn-out single whistle, rather flat in pitch, slightly ascending or descending, hence that of present taxon differing in structure, greater length (3) and frequency range (2)#R. Monotypic.

Distribution:

SE Venezuela (E Bolívar), the Guianas and N Brazil (E from R Branco, S to R Amazon).

Descriptive notes

9·5–12·5 cm; 9·2–14·5 g. Compared to previously conspecific T. ochraceiceps, adult is dark citrine above, darker olivaceous on crown, with forehead and area above... read more

Voice

Song a repeated, ventriloquial, penetrating phrase of two slightly descending whistles, the second... read more

Habitat

Understorey of humid evergreen or semi-deciduous forest, being rarely observed at borders or edges... read more

Food and feeding

Diet very poorly known, but probably comprises mainly small arthropods, especially insects. Singles or pairs forage in lower storey of... read more

Breeding

No information, except that around Manaus (C Amazonian Brazil) birds in breeding condition have been trapped in Jan, Mar and Jul–Nov.

Movements

Probably sedentary.

Status and conservation

Not globally threatened (Least Concern). Fairly common resident, but easily overlooked, especially as its song is easily missed and difficult to pinpoint. Seems not to occur... read more

Recommended citation

del Hoyo, J., Collar, N. & Kirwan, G.M. (2018). Olive-crowned Greenlet (Tunchiornis luteifrons). 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/1343766 on 11 December 2018).