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Tepui Antpitta Myrmothera simplex Scientific name definitions

Niels Krabbe and Thomas S. Schulenberg
Version: 1.0 — Published March 4, 2020
Text last updated January 1, 2003

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Introduction

Despite its relatively tiny range, in southern Venezuela and immediately adjacent parts of northernmost Brazil and westernmost Guyana, four subspecies of the Tepui Antpitta are recognised, although they appear to differ rather little in plumage and apparently not at all in their vocalizations. Also known as the Brown-breasted Antpitta, the species’ overall plumage is dark chestnut-brown above, with a pale postocular spot, a white throat and generally greyish or brown underparts. Its nest is apparently similar, in being cup-shaped and placed low off the ground, to congenerics, and the clutch size is also two eggs. Like other Myrmothera antpittas, the species forages alone and typically on the ground, in the dense undergrowth of forest between 600 and 2400 m.

Field Identification

16 cm; four males 40·5–53 g, two females 51·8 g and 53 g. Adult has small white postocular spot; side of head and upperparts chestnut-brown, paler on lores; chin and throat white, breast, sides and flanks olivaceous grey or grey washed with olive-brown, centre of belly white, crissum tawny-brown; iris brown; bill black, base of lower mandible flesh-white; tarsus medium grey. Juvenile undescribed. Races differ only little: duidae has browner breastband and on flanks; guaiquinimae is similar, but breast and flanks more olive, less brown; pacaraimae is paler above than other races, with less extensive breastband.

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.

Four subspecies recognized

Subspecies


SUBSPECIES

Myrmothera simplex duidae Scientific name definitions

Distribution

S Venezuela in Amazonas (cerros of Yaví, Sipapo, Duida and Neblina, Sierra de Unturán).

SUBSPECIES

Myrmothera simplex guaiquinimae Scientific name definitions

Distribution

SE Venezuela in NW and C Bolívar (cerros of Tabaro, Guaiquinima and Sarisariñama, and Meseta de Jaua).

SUBSPECIES

Myrmothera simplex simplex Scientific name definitions

Distribution

Gran Sabana and Mt Roraima, in SE Venezuela (SE Bolívar) and adjacent Guyana.

SUBSPECIES

Myrmothera simplex pacaraimae Scientific name definitions

Distribution

SE Venezuela in SE Amazonas (R Ocamo) and S Bolívar (Pacaraima Mts) and immediately adjacent N Brazil.

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

Dense rainforest and cloudforest, in thick undergrowth; on summits of tepuis also in more open stunted forest and woodland. At 600–2400 m; in Guyanan sector of Mt Roraima, commonest above 1200 m.

Movement

Presumably sedentary.

Diet and Foraging

Diet not recorded. Forages alone. Almost entirely terrestrial. Behaviour much like that of M. campanisona, but less shy.

Sounds and Vocal Behavior

Song 3–3·5 seconds long, given at intervals of 9–14 seconds, a rising series of 10–11 similar evenly paced, whistled notes at 1–1·2 kHz, volume gradually increasing, first 3–4 notes sometimes falling in pitch.

Breeding

Single nest recently found, birds incubating in Mar, in Guyana. Nest placed at leaf bases and petioles of Philodendron linnaei (Araceae); cup-shaped, made of small sticks with dead leaves at base, lined with smaller sticks and rootlets. Clutch 2 eggs, 26–27 × 20 mm. Incubation by both adults.
Not globally threatened. Restricted-range species: present in Tepuis EBA. Uncommon to fairly common. Occurs in several protected areas, e.g. Canaíma National Park (Venezuela).
Distribution of the Tepui Antpitta - Range Map
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  • Year-round
  • Migration
  • Breeding
  • Non-Breeding
Distribution of the Tepui Antpitta

Recommended Citation

Krabbe, N. and T. S. Schulenberg (2020). Tepui Antpitta (Myrmothera simplex), 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.tepant1.01
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