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Green-throated Mountain-gem Lampornis viridipallens Scientific name definitions

Thomas Züchner and Peter F. D. Boesman
Version: 1.0 — Published March 4, 2020
Text last updated January 1, 1999

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Introduction

These fairly large hummingbirds have a striking white eye stripe above a dark cheek patch. The white throat of both sexes is speckled blue or green on male but plain on the female. Green-throated Mountain-gems live in humid evergreen and pine-oak forests and their edges where they forage at all levels and fan out their tails when feeding.

Field Identification

11–12 cm; c. 5·4 g. Male has straight black bill; upperparts green, bronzy on rump, postocular stripe white, ear-coverts darkish, uppertail-coverts bluish black; throat white with bluish-green iridescent discs, breast white, rest of underparts greyish, mottled green on sides and flanks, undertail-coverts dusky grey; tail slightly forked, central rectrices black, remainder pale grey. Female similar to male, upperparts generally emerald-green, throat white. Juvenile resembles adult female, but throat pale buffy. Race amadoni is darker, less bronzy on rump, central rectrices black; ovandensis differs in having less green areas on sides of breast and flanks; in nubivagus upperparts are dark green, rump intense bronze.

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.

Closely related to L. sybillae, with which has been considered conspecific. Races ovandensis and nubivagus weakly differentiated; perhaps better treated as synonyms of nominate. Proposed race connectens, known from single specimen from N El Salvador, falls within normal range of variation of nominate. Four subspecies currently recognized.

Subspecies


SUBSPECIES

Lampornis viridipallens amadoni Scientific name definitions

Distribution

Sierra Atravesada (SE Oaxaca), in S Mexico.

SUBSPECIES

Lampornis viridipallens ovandensis Scientific name definitions

Distribution

highlands of SE Mexico (Chiapas) and NW Guatemala.

SUBSPECIES

Lampornis viridipallens viridipallens Scientific name definitions

Distribution

highlands of E Guatemala, extreme N El Salvador and W Honduras.

SUBSPECIES

Lampornis viridipallens nubivagus Scientific name definitions

Distribution

El Salvador (Santa Ana Volcano).

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

Edge and interior of humid evergreen and pine-oak forest, at 900–2700 m. Forages from low to higher strata.

Movement

Sedentary.

Diet and Foraging

No specific food plants have been recorded. Presumably feeds on nectar of similar flowering plants as L. amethystinus, like Campanulaceae, Onagraceae, or Salvia. Insects are caught in the air by hawking.

Sounds and Vocal Behavior

Presumed song a complex warble of squeaky notes and buzzy, gurgling trills, “tsee-tsee-glr-tsee-glr-tsee-glugluglugluglu-glr-glr-tsee”. Calls include a hard, buzzy “zzrrt”, a short “tsik” and high-pitched thin “see”.

Breeding

Mar–Apr, Jun–Jul. No further data available.
Not globally threatened. CITES II. Restricted-range species: present in North Central American Highlands EBA. Generally common, though parts of habitat are under threat of deforestation; not known to tolerate man-made habitats. Regularly recorded at El Triunfo Biological Reserve and Lagos de Montebello (S Chiapas).
Distribution of the Green-throated Mountain-gem - Range Map
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  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Green-throated Mountain-gem

Recommended Citation

Züchner, T. and P. F. D. Boesman (2020). Green-throated Mountain-gem (Lampornis viridipallens), 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.gtmgem1.01
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