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Common Jery Neomixis tenella Scientific name definitions

Peter Ryan
Version: 1.0 — Published March 4, 2020
Text last updated September 25, 2018

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Field Identification

10 cm; 6–8 g. A small, rather nondescript forest warbler, superficially recalling a drab leaf-warber Phylloscopus, but with rather heavy bill . Nominate race has olive-green crown, contrasting yellowish supercilium, darker eyestripe and grey nape and cheeks; upperparts olive-green; flight-feathers darker with narrow pale yellowish margins; throat and upper breast pale yellow, merging into whitish belly, central breast often diffusely streaked olive-green; eyes pale brown; bill dark horn above, paler orange-horn below; legs pinkish-orange. Differs from congeners in having yellowish face and breast, greyish nape. Sexes alike. Juvenile has darker eye than adult. Race orientalis is darker than nominate, with greener upperparts, broader grey nape patch, greyer underparts, yellow on breast often reduced; decaryi has duller, grey-green upperparts, greenish-yellow breast often quite heavily streaked, olive wash on flanks; debilis is dullest, distinctly grey-green above and washed grey below , with duller yellow-green on throat and breast.

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.

Range limits of different subspecies unclear in part, including in areas of SE and C Plateau (1); further research required. Four subspecies recognized.

Subspecies


SUBSPECIES

Neomixis tenella tenella Scientific name definitions

Distribution

N Madagascar.

SUBSPECIES

Neomixis tenella decaryi Scientific name definitions

Distribution

W part of C Madagascar.

SUBSPECIES

Neomixis tenella orientalis Scientific name definitions

Distribution

EC and SE Madagascar.

SUBSPECIES

Neomixis tenella debilis Scientific name definitions

Distribution

S Madagascar.

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

Wide range of forest and woodland habitats, from mangroves to scrub and secondary growth, including gardens and plantations, from sea-level to 1800 m. Tolerates more disturbance than do most other forest and woodland species in Madagascar, but disappeared from W dry-forest fragments immediately after a fire.

Movement

Little known; presumably mostly resident.

Diet and Foraging

Diet mainly insects. Gleans foliage in canopy, constantly moving and often hanging upside-down. In scrubby vegetation, occurs low down, and even forages on ground occasionally. Frequently probes flowers (head sometimes becoming covered with pollen). Often in mixed-species flocks, including with congeners; during winter may form flocks of up to 20 individuals.

Sounds and Vocal Behavior

High-pitched “tsee-tsee-tsee”  call given almost continuously during foraging, sometimes followed by lower note, “tsee-tsee-tsee-tsee-tsirrup”. Male song similar, uttered from high perch. Also may give sunbird-like “dzhee”, possibly when alarmed.

Breeding

Little known. Breeds during summer rains, Sept–Apr, although one male with enlarged testes in Jul. Nest a flimsy ball with side-top entrance, made of vegetation bound with plant down and spider webs, lined with moss, built among a cluster of twigs or small branches in dense foliage, usually 3 m above ground. Clutch 2–4 eggs; no information on incubation and fledging periods.
Not globally threatened. Common throughout much of Madagascar. Is an important pollinator of the plant Aloe divaricata, and may pollinate the dioecious tree Commiphora guillauminii.
Distribution of the Common Jery - Range Map
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  • Migration
  • Breeding
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Distribution of the Common Jery

Recommended Citation

Ryan, P. (2020). Common Jery (Neomixis tenella), 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.comjer1.01
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