- Ashy-throated Chlorospingus
 - Ashy-throated Chlorospingus
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Ashy-throated Chlorospingus Chlorospingus canigularis Scientific name definitions

Steven Hilty
Version: 1.0 — Published March 4, 2020
Text last updated January 1, 2011

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Introduction

Though patchily distributed, Ashy-throated Bush-Tanager is fairly common where it occurs. They inhabit humid forest along both slopes of the Andes, preferring forest borders and open woodland. They are generally found in small groups which often join mixed species flocks. Active foragers, they spend much time in the canopy and subcanopy, where they glean for insects and eat fruit. Ashy-throated Bush-Tanager has two subspecies: C. c. signatus, occurring on the eastern Andean slope, and C. c. paulus, which occurs on the west slope. These differ primarily in white eyeline of signatus, which lacks in the solid gray head of paulus. Both subspecies share a dark iris, gray head with pale throat, and yellow band across the breast. Their calls are chip notes, joined together into a fast trilling series for the song.

Field Identification

13–14 cm; 14·5–21 g. Grey-headed bush-tanager with bill more slender than that of congeners. Nominate race has crown and side of head grey, ear-coverts slightly darker; upperparts, including upper­wing-coverts and tail, olive-green (back ­contrasting with grey head); throat clear greyish-white; broad chestband light yellow, this colour continuing down sides and flanks, where tinged olive; centre of breast and belly whitish to greyish-white, undertail-coverts olive-yellow; iris reddish-brown; bill sometimes all dusky, but often most of lower mandible pale steel-grey; legs dark grey. Sexes alike. Juvenile undescribed. Race conspicillatus is very similar to nominate, but yellowish breastband broader and slightly darker, and sides and flanks slightly more olive; paulus is very similar to previous and nominate, but has uniformly grey head (ear-coverts concolorous with crown) and is slightly smaller; signatus has head slightly darker grey, with narrow but conspicuous white postocular stripe continuing to nape; olivaceiceps differs from others in having head mainly olive, like upperparts.

Systematics History

Editor's Note: This article requires further editing work to merge existing content into the appropriate Subspecies sections. Please bear with us while this update takes place.

Isolated race olivaceiceps differs in its olive vs grey crown and head sides (3), but appears otherwise very similar to other subspecies including in voice (this needs confirmation), although apparently less sociable (1). Five subspecies recognized.

Subspecies


EBIRD GROUP (MONOTYPIC)

Ashy-throated Chlorospingus (Olive-crowned) Chlorospingus canigularis olivaceiceps Scientific name definitions

Distribution

mountains in Costa Rica (mainly E slope in Central Valley and R Reventazón) and W Panama (Bocas del Toro E to Veraguas).

EBIRD GROUP (POLYTYPIC)

Ashy-throated Chlorospingus (Ashy-throated) Chlorospingus canigularis [canigularis Group]

Available illustrations of subspecies in this group

SUBSPECIES

Chlorospingus canigularis canigularis Scientific name definitions

Distribution
S end of Venezuelan Andes (Táchira) and on W slope of E Andes in Colombia (S to vicinity of Bogotá).

SUBSPECIES

Chlorospingus canigularis conspicillatus Scientific name definitions

Distribution
both slopes of W Andes (from Antioquia S to Cauca) and both slopes of C Andes (from Caldas S to Huila) of Colombia.

SUBSPECIES

Chlorospingus canigularis paulus Scientific name definitions

Distribution
W slope of Andes from Ecuador (Chimborazo) S to NW Peru (Tumbes).

SUBSPECIES

Chlorospingus canigularis signatus Scientific name definitions

Distribution
E slope from Ecuador (from Napo) S to Peru (Cajamarca, and spottily S to Cuzco).

Distribution

Editor's Note: Additional distribution information for this taxon can be found in the 'Subspecies' article above. In the future we will develop a range-wide distribution article.

Habitat

Canopy of tall, wet and mossy forest, vines in upper levels of forest, along edges and in mature second growth, occasionally in scattered trees in clearings by forest. Recorded at 300–1500 m in Central America; 1200–2600 m in W Venezuela and Colombia; in Ecuador, mostly 700–1300 m (locally down to 400 m) along W slope of Andes and mostly 1000–1900 m on E slope; 1000–1800 m in E Peru.

Movement

Resident.

Diet and Foraging

Diet not well known. Fruits recorded; in Costa Rica reported as eating berries from melastomes, Rubiaceae, Hedyosmum, etc. Forages in small active groups, occasionally up to ten individuals; joins mixed-species flocks and often with other bush-tanagers (especially C. flavopectus). Explores foliage, bare or mossy limbs, especially slender branches and ends of branches, and searches in vine tangles from near ground to treetops; unlike most other members of genus, more often high or in canopy, and seems particularly fond of vine tangles.

Sounds and Vocal Behavior

Song in Peru (race signatus) a high “seet” accelerated into rapid chittery trill, descending and then rising to abrupt end; call a high “chit”. Song in Colombia a rather similar “tsuk...tsuk...chit-chit chi’t’t’t’t’t’t’a’a’a’a’i’i’it’it-tit”, trill rising slightly, then descending, and rising again at end. In Costa Rica, call a high, thin, sharp, penetrating “zeezít” or “dzee dzít”, sometimes “zee zee zít”; possible song a sibilant, slightly ascending “tse tse tse tsee”. In Venezuela gives thin chipping and rapid chittering notes when foraging.

Breeding

Birds in breeding condition in Mar–May and Sept in Colombian Andes. No other information.
Not globally threatened. Uncommon to fairly common; perhaps somewhat local in Andes. Although it is not currently at risk, the middle-Andean elevations favoured by this species are often subject to intensive colonization pressure, which could eventually pose a threat at a local scale.
Distribution of the Ashy-throated Chlorospingus - Range Map
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Distribution of the Ashy-throated Chlorospingus

Recommended Citation

Hilty, S. (2020). Ashy-throated Chlorospingus (Chlorospingus canigularis), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.atbtan1.01
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