Rufous-capped Antthrush

formicarius colma

Formicariidae · Antthrushes, Antpittas

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

The account

Description

17 cm. Crown and nape bright rufous. Above brown. Head sides, neck and throat black becoming gray on the belly. Sexes alike.

The disc records this picture against the bird without a caption. Disc 3 · 2006

Where it was recorded

The discs' own checklists select Rufous-capped Antthrush at 13 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. 1 has no usable coordinate and is listed below unplotted.

Boraceia BOSB
Fazenda Intervales FASB
Ilha do Cardoso ILSB
Jureia-Peruibe JUSB position not recoverable
Nucleo Sta. Virginia NUSP
Parati PARB
Pariquera-Abaixo PESB
PE Jacupiranga PJSB
Reserva Ecológica Guapiacú RERB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
Sete Barras STSB
Ubatuba UBSB

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

The frequently delivered song is a rapid series of high notes that decrease in pitch at the beginning and then gradually end up on a higher pitch lasting about 5 seconds. Call also diagnostic, a singly syllabled 'tshiet..... tshiet...'.

Behavior

A bird of the forest floor that walks about deliberately in a rail-like manner cocking its tail which is usually held upright.

Breeding

Nests are cups put in upward opening stumps (⁴⁴)

Habitat and status

Regular, sometimes common in humid primary and secondary forest.

Distribution

Throughout the area (Ilha do Cardoso, PE Jacupiranga, Ubatuba, Parati) Up to 600 meters at Fazenda Intervales.

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. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest.
Calls. Picinguaba, east of Ubatuba, 11/20/98. Cloudy, 20°C. Secondary forest.
Song. Picinguaba, east of Ubatuba, 11/21/98. Cloudy, light rain, 20°C. Secondary forest.
Call. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest. With Hypoedaleus guttatus, Habia rubica.
Song. 10/14/99, Picinguaba, east of Ubatuba. Sunny, 30°C. Forest. With Turdus rufiventris.

Recording files on the disc

6949.mp3 Song. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest.
11706.wav Calls. Picinguaba, east of Ubatuba, 11/20/98. Cloudy, 20°C. Secondary forest.
3839.wav Song. Picinguaba, east of Ubatuba, 11/21/98. Cloudy, light rain, 20°C. Secondary forest.
12847.wav Call. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest. With Hypoedaleus guttatus, Habia rubica.
15847.wav Song. 10/14/99, Picinguaba, east of Ubatuba. Sunny, 30°C. Forest. With Turdus rufiventris.

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	formicarius colma	Rufous-capped Antthrush	Formicariidae
CLEMENTS	formicarius colma	Rufous-capped Antthrush	Formicariidae
AOU_HM	formicarius colma	Rufous-capped Antthrush	Formicariidae

Source details

Identifier on this site: seb_species_0149
Account identifier: seb_account_0149
Account number on the disc: 149
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative