Rufous-capped Antshrike

thamnophilus ruficapillus

Thamnophilidae · Antbirds, Antwrens

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

The account

Description

16 cm. The male is rusty-brown above, with gray sides of neck and head forming a collar. Below grayish white, the breast boldly barred black. tail dark brown, with white spotted outers.

The female has a rufous crown, wings and tail and is otherwise brown above. Below unbarred grayish white.

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 Antshrike at 14 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
Campos do Jordão CASB
Fazenda Intervales FASB
Itirapina ITSB
Jureia-Peruibe JUSB position not recoverable
Nucleo Sta. Virginia NUSP
Parati PARB
PE Carlos Botelho PCSB
PE Jacupiranga PJSB
Santa Barbara do Rio Pardo SNSB
Serra da Cantareira SRSB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
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

Song is a slow accelerating 'dije dje dje dje dedededededeeh' (the last syllable somewhat emphasized).

Behavior

Forages in dense scrub and thickets, but appears regularly in the open. Mostly in pairs.

Habitat and status

The typical antshrike of high altitude scrub. In montane and highland scrub, forest borders and clearings but not in the interior of cloud forest.

Distribution

On all higher ranges in Estado de São Paulo (Campos do Jordão, Serra Bocaina) and Estado de Rio de Janeiro (Serra Mantiqueira, Serra dos Orgãos), but is not confined to the higher regions and also occurs, e. g., near sede of Fazenda Intervales. From about 700-2200 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, 11/18/98. Sunny, 20°C. High altitude scrub. With Oreophylax moreirae, Turdus rufiventris.
Song. Serra da Mantiqueira, 11/18/98. Sunny, 20°C. High altitude scrub. With Pygochelidon cyanoleuca, Turdus rufiventris, Oreophylax moreirae.
Call. Cornell Cat#19287, Osorio, Fazenda do Portal, Rio Grande do Sul, 09/28/75. With Crypturellus tataupa. Recording by W. Belton.
Song. Cornell Cat#32149, Taim Biological Station, Rio Grande do Sul, 11/22/82. T. A, Parker, III.

Recording files on the disc

6047.wav Song. Serra da Mantiqueira, 11/18/98. Sunny, 20°C. High altitude scrub. With Oreophylax moreirae, Turdus rufiventris.
9201.wav Song. Serra da Mantiqueira, 11/18/98. Sunny, 20°C. High altitude scrub. With Pygochelidon cyanoleuca, Turdus rufiventris, Oreophylax moreirae.
6152.wav Call. Cornell Cat#19287, Osorio, Fazenda do Portal, Rio Grande do Sul, 09/28/75. With Crypturellus tataupa. Recording by W. Belton.
15808.wav Song. Cornell Cat#32149, Taim Biological Station, Rio Grande do Sul, 11/22/82. T. A, Parker, III.

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	thamnophilus ruficapillus	Rufous-capped Antshrike	Thamnophilidae
CLEMENTS	thamnophilus ruficapillus	Rufous-capped Antshrike	Thamnophilidae
AOU_HM	thamnophilus ruficapillus	Rufous-capped Antshrike	Thamnophilidae

Source details

Identifier on this site: seb_species_0118
Account identifier: seb_account_0118
Account number on the disc: 118
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative