Such's Antthrush

chamaeza meruloides

Formicariidae · Antthrushes, Antpittas

Disc 2 · 2001 listed
Disc 3 · 2006 listed
Disc 1 · 2011 listed

The account

Description

19-19.5 cm. Probably not distinguishable in the field from campanisoma and ruficauda. Distinguishing characteristics are a reddish tail with a black subterminal band and pale tips. The rump and tail are reddish. The bill is small and dark. Forehead reddish without black spots. Throat whitish with no black marks. Crissum not barred.

meruloides Disc 3 · 2006

Where it was recorded

The discs' own checklists select Such's Antthrush at 7 localities.

Historical checklist localities on the disc's own area map — the red dots the original program drew, placed by its recovered projection. Not a range map: it shows the places whose checklists record the bird, nothing more.

How the map was made

The original program computed each red dot at display time from the locality's coordinates, using its map library and one of five base maps drawn for the screen widths of the day. That library's projection — an oblique rotation of the sphere about the map's own centre, 23.7°S 47.4°W — was read from the program and checked against the graticule the same program drew into the base maps: it reproduces every grid intersection to within about a pixel. The dots here use that projection on the 1280-pixel base map, with the coordinates the discs record. Nothing was placed by hand, no modern map data was used, and a place whose coordinate is incomplete, out of range or beyond the map's edge is listed rather than guessed.

The discs carried location maps only; none shows a distribution or range.

Voice

Long and very slowly ascending otus-like whistles lasting for 25-40 seconds, the longest song of the three species.

Behavior

A forest floor walker, climbing on logs and over roots.

Habitat and status

Regularly heard at the mid level of mountain ranges in dense forest and scrub.

Distribution

Throughout the area, e. g. in the Serra Mantiqueira and Boraceia, from 200-1500 meters.

Decoded from the disc's own bytes. Each part is shown under the heading the disc files it under, and the wording, spelling and punctuation are the author's.

Vocalizations

Song. Serra da Mantiqueira, Tres Picos trail, Itatiaia NP, 11/5/93. Sunny, 25°C. Primary forest edge.
Song. 10/26/99, Serra da Mantiqueira, Tres Picos Trail. Clear, 25°C. Forest. With Drymophila ferruginea, Drymophila rubricollis, Schiffornis virescens, Synallaxis ruficapilla, Pyriglena leucoptera.
Song, 1x repeated. 10/26/99, Serra da Mantiqueira, Tres Picos Trail. Clear, 25 °C. Forest. With Grallaria varia.
Song. Fazenda Intervales 10/25/00. Sunny, 25°C. Primary forest. With Ramphocaenus melanurus, Procnias nudicollis, Lipaugus lanioides.
Song, Fazenda Intervales, 10/25/00. Cloudy, 20°C. Primary forest. With Procnias nudicollis, Myiodynastes maculatus.
Song, Fazenda Intervales, 11/30/97. Sunny, 81°F. Primary forest. With Habia rubica singing, Pyriglena leucoptera.

Recording files on the disc

12273.mp3 Song. Serra da Mantiqueira, Tres Picos trail, Itatiaia NP, 11/5/93. Sunny, 25°C. Primary forest edge.
4549.wav Song. 10/26/99, Serra da Mantiqueira, Tres Picos Trail. Clear, 25°C. Forest. With Drymophila ferruginea, Drymophila rubricollis, Schiffornis virescens, Synallaxis ruficapilla, Pyriglena leucoptera.
11070.wav Song, 1x repeated. 10/26/99, Serra da Mantiqueira, Tres Picos Trail. Clear, 25 °C. Forest. With Grallaria varia.
16284.wav Song. Fazenda Intervales 10/25/00. Sunny, 25°C. Primary forest. With Ramphocaenus melanurus, Procnias nudicollis, Lipaugus lanioides.
7879.mp3 Song, Fazenda Intervales, 10/25/00. Cloudy, 20°C. Primary forest. With Procnias nudicollis, Myiodynastes maculatus.
11150.mp3 Song, Fazenda Intervales, 11/30/97. Sunny, 81°F. Primary forest. With Habia rubica singing, Pyriglena leucoptera.

Across the three discs

The work was published on three discs — Disc 2 in 2001, Disc 3 in 2006 and Disc 1 in 2011. Where they differ, that is a difference between historical releases, and it is never merged away. The 2011 disc is not treated as correcting the earlier ones.

Which discs list this bird

Disc 2 · 2001 — in this disc's bird list
Disc 3 · 2006 — in this disc's bird list
Disc 1 · 2011 — in this disc's bird list

How that was established

Disc 2 · 2001: aux_nonzero;local_checklist_byte45_flag_1
Disc 3 · 2006: aux_nonzero;local_checklist_byte45_flag_1
Disc 1 · 2011: aux_nonzero;local_checklist_byte45_flag_1

The disc's own record fields that place the bird on its list: a non-empty entry in the species table, and the byte that marks it as selected on a local checklist.

The account in the Disc 1 · 2011 revision

The 2011 Disc 1 revision carries this account text unchanged from the Disc 3 release.

The work's own taxonomy

The discs carried three parallel name schemes. All three are shown as recovered; none is a modern taxonomy and none has been updated.

Scheme	Scientific name	English name	Family
WORLD	chamaeza meruloides	Such's Antthrush	Formicariidae
CLEMENTS	chamaeza meruloides	Such's Antthrush	Formicariidae
AOU_HM	chamaeza meruloides	Such's Antthrush	Formicariidae

Open questions about this bird

Recovered evidence that has not been settled. It is published because leaving it out would misrepresent what the discs contain.

Later listening, kept separate from the disc's own claims

content_mc2 — review_identification: Such's Antthrush (human_review; definite)

Listening observation HRO_SCAN_0026

What was heard: Such's Antthrush

Relationship to the disc's evidence: agrees

Identification certainty: definite · transcription certainty: probable · handwritten_original

Source details

Identifier on this site: seb_species_0152
Account identifier: seb_account_0152
Account number on the disc: 152
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative