The Land Birds of Southeast BrazilA preserved edition
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Blue-and-white Swallow

pygochelidon cyanoleuca

Hirundinidae,Hirundininae · Martins, Swallows

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

The account

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

Where it was recorded

The discs' own checklists select Blue-and-white Swallow at 26 localities.

The disc's own area map with 24 of Blue-and-white Swallow's checklist localities marked Barreiro Rico Boraceia Campos do Jordão Fazenda Campininha Fazenda Intervales Fazenda Paraiso Ilha do Cardoso Ilha São Sebastião Itirapina Marica Nucleo Sta. Virginia Parati Pariquera-Abaixo PE Carlos Botelho PE Jacupiranga Reserva Ecológica Guapiacú Rio de Janeiro Serra Bocaina Serra da Cantareira Serra dos Orgãos Serra dos Tucanos Sete Barras Ubatuba Vassununga
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 recorded locality lies beyond the map's edge and is listed below instead.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

  • Warning calls. Serra da Mantiqueira, 11/18/98. Sunny, 20°C. High altitude open country. With Turdus rufiventris.
  • Calls, T. A. Parler, Jr., LNS22024.
  • Calls, T. A. Parker, LNS24085.
  • Calls, Parque Estadual Rio Doce, MG, November 11, 2000, cloudy, 25°C, open forest.
Recording files on the disc
  • 13157.mp3 Warning calls. Serra da Mantiqueira, 11/18/98. Sunny, 20°C. High altitude open country. With Turdus rufiventris.
  • 3871.mp3 Calls, T. A. Parler, Jr., LNS22024.
  • 12010.mp3 Calls, T. A. Parker, LNS24085.
  • 9884.mp3 Calls, Parque Estadual Rio Doce, MG, November 11, 2000, cloudy, 25°C, open forest.

More images

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

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 pygochelidon cyanoleuca Blue-and-white Swallow Hirundinidae,Hirundininae
CLEMENTS pygochelidon cyanoleuca Blue-and-white Swallow Hirundinidae,Hirundininae
AOU_HM pygochelidon cyanoleuca Blue-and-white Swallow Hirundinidae,Hirundininae

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_9884 — historical_target: NEOCHELIDON TIBIALIS (historical_source)

content_9884 — review_identification: Blue-and-white Swallow (human_review; definite)

Listening observation HRO_0004

What was heard: Blue-and-white Swallow is audible.

Relationship to the disc's evidence: agrees

Identification certainty: definite · transcription certainty: not_applicable · owner_family_clarification

Review notes

review_0012

Recovered review record — open: image classification; exact_unique

Evidence: unlabeled entry occurs in the visual terminal segment; filename exists as both audio and image · Recommended: Open the referenced media in a safe player/viewer and confirm species/type; do not alter the source file.

Review v1.1 decision — resolved_by_context

Reviewer: ChatGPT structural audit

Notes: Reference 8891 occurs in the visual terminal segment beside another image reference. The intended asset is 8891.jpg; 8891.mp3 is independently associated with another account.

How later review relates to this bird's record

Added after review XW_0003 — ordinary_species_account_link

Historical label: Blue-and-white Swallow / pygochelidon cyanoleuca

agrees · retain historical link

Later listening confirms; does not create the link.

Source details
Identifier on this site
seb_species_0305
Account identifier
seb_account_0305
Account number on the disc
305
Source edition
CD03 / 2006 package
Original taxonomy scheme
WORLD
Structure status
heuristic; decoded_account_text and segment JSON remain authoritative