- Sclater's Tyrannulet
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Sclater's Tyrannulet Phyllomyias sclateri Scientific name definitions

John W. Fitzpatrick
Version: 1.0 — Published March 4, 2020
Text last updated January 1, 2004

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Introduction

The Sclater’s Tyrannulet ranges through the southern Andes, from southeastern Peru south to northwestern Argentina, at elevations below c.1500 m, often being found in alder-dominated forests. It is generally fairly common, but is easily overlooked, like several congenerics, and is perhaps most regularly seen accompanying mixed-species flocks, especially those predominantly comprising tanagers. In terms of plumage, the Sclater’s Tyrannulet is largely dull olive-colored above, with two broad white wing bars, and largely clean white below; the crown is rather grayer than the rest of the upperparts, and the face pattern is dominated by the pale supercilium.

Field Identification

11·5 cm. Is dull olive-green above, slightly more greyish on crown; lores and short supercilium whitish; wings dusky, two broad wingbars and conspicuous edges of flight-feathers very pale yellow to whitish; tail dusky olive; throat greyish-white, lower face grizzled whitish, breast pale grey, grading to pale yellowish on flanks and belly; iris brown; bill small and rounded, blackish, lower mandible slightly paler at base; legs grey. Sexes alike. Juvenile resembles adult. Race subtropi­calis is more greyish-green above, supercilium wider, crown more pure grey, edges of flight-feathers white, underparts very pale, virtually lacking yellow suffusion.

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.

Formerly placed in Xanthomyias, along with P. virescens. Suggested to be closely related to P. reiseri on basis of strong similarities in main vocalizations, as well as in general build and posture, and being closer to each other than either is to P. virescens (1). Proposed taxon australis is a synonym. Two subspecies recognized.

Subspecies


SUBSPECIES

Phyllomyias sclateri subtropicalis Scientific name definitions

Distribution

E Andes of SE Peru (Cuzco to Puno).

SUBSPECIES

Phyllomyias sclateri sclateri Scientific name definitions

Distribution

E Andes of Bolivia (La Paz S to Tarija) and NW Argentina (Jujuy S to Tucumán).

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

Humid montane forest and cloudforest; found also at edges, and often in clearings and lighter woodlands dominated by alder (Alnus). At 1500–2400 m in Peru and N Bolivia, and 400–1500 m in Bolivia and Argentina.

Movement

Presumed resident.

Diet and Foraging

Insects. Forages actively in middle and upper levels of mossy forest, sometimes alone, often with mixed tanager (Thraupidae) flocks. Perches horizontally, and rapidly flicks wings while perch-gleaning from branches and leaves.

Sounds and Vocal Behavior

Rapid series of harsh, sputtering notes.

Breeding

Juvenile in Nov in Bolivia. Nest an open cup of twigs, lined with feathers, placed in epiphytes on elevated tree branch (Argentina). Clutch size and other details not documented.
Not globally threatened. Rare to fairly common; perhaps often overlooked. Regularly observed in Machu Picchu Historical Sanctuary (from near base, e.g. along lower part of Puente Ruinas-Machu Picchu Ruins road), in Peru; occurs also in Madidi National Park and Pilón Lajas Biosphere Reserve, in Bolivia.
Distribution of the Sclater's Tyrannulet - Range Map
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  • Migration
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Distribution of the Sclater's Tyrannulet

Recommended Citation

Fitzpatrick, J. W. (2020). Sclater's Tyrannulet (Phyllomyias sclateri), 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.scltyr1.01
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