The Land Birds of Southeast BrazilA preserved edition
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Rufous-backed Antvireo

dysithamnus xanthopterus

Thamnophilidae · Antbirds, Antwrens

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

The account

  • High altitude forest. Campos do Jordão. Biome of Dysithamnus xanthopterus. Disc 3 · 2006

Where it was recorded

The discs' own checklists select Rufous-backed Antvireo at 13 localities.

The disc's own area map with 12 of Rufous-backed Antvireo's checklist localities marked Boraceia Campos do Jordão Fazenda Intervales Nucleo Sta. Virginia Parati PE Carlos Botelho Reserva Ecológica Guapiacú Rio de Janeiro Serra Bocaina Serra dos Orgãos Serra dos Tucanos Ubatuba
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.
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.

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. 10/27/99, Campos do Jordão, road to São Jose dos Alpes. Some clouds, 25°C. Forest, 1800 meters.
  • Calls. Serra das Orgaos, Teresopolis. 11/2/00. Rain, 18°C. Primary rain forest. With Batara cinerea, Carpornis cucullatus.
  • Song, Serra dos Orgãos, 10/26/00. Rainy and cold, 17°C. Secondary forest.
Recording files on the disc
  • 11051.wav Song. 10/27/99, Campos do Jordão, road to São Jose dos Alpes. Some clouds, 25°C. Forest, 1800 meters.
  • 4429.wav Calls. Serra das Orgaos, Teresopolis. 11/2/00. Rain, 18°C. Primary rain forest. With Batara cinerea, Carpornis cucullatus.
  • 11867.mp3 Song, Serra dos Orgãos, 10/26/00. Rainy and cold, 17°C. Secondary forest.

More images

  • The disc records this picture against the bird without a caption. Disc 3 · 2006
  • The disc records this picture against the bird without a caption. Disc 1 · 2011

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 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.

SchemeScientific nameEnglish nameFamily
WORLD dysithamnus xanthopterus Rufous-backed Antvireo Thamnophilidae
CLEMENTS dysithamnus xanthopterus Rufous-backed Antvireo Thamnophilidae
AOU_HM dysithamnus xanthopterus Rufous-backed Antvireo Thamnophilidae

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.

References that could not be resolved

dsthxnth — candidate could not be resolved without guesswork (preserved_unresolved)

Review notes

review_0006

Recovered review record — open: Moved one terminal visual segment from account 122 to account 121.

Evidence: A66 is an image/biome entry naming Dysithamnus xanthopterus, the scientific identity of account 121. · Recommended: Confirm visually against the original program or field notes when available; retain correction unless contradicted.

Review v1.1 decision — accepted_provisionally

Reviewer: ChatGPT structural audit

Notes: The correction is strongly supported by account grammar, checklist order, species-name evidence, and media-segment placement. Retain in the working dataset; optional confirmation against the original program or field notes remains.

Source details
Identifier on this site
seb_species_0121
Account identifier
seb_account_0121
Account number on the disc
121
Source edition
CD03 / 2006 package
Original taxonomy scheme
WORLD
Species boundary note
Boundary audited with account 122; one segment reassigned.
Account boundary note
Boundary audited with account 122; one segment reassigned.
Structure status
heuristic; decoded_account_text and segment JSON remain authoritative