The Land Birds of Southeast BrazilA preserved edition
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Streamer-tailed Tyrant

gubernetes yetapa

Tyrannidae,Fluvicolinae · Fluvicoline Flycatchers

  • 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 Streamer-tailed Tyrant at 7 localities.

The disc's own area map with 7 of Streamer-tailed Tyrant's checklist localities marked Fazenda Paraiso Iguape Itirapina Rio de Janeiro Santa Barbara do Rio Pardo Serra Bocaina Serra dos Tucanos
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.

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, calls. Near San Jose de Barreiro, 10/26/94. Sunny, 25°C. Open country with trees. With Turdus amaurochalinus, long song of Tapera naevia, Notiochelidon cyanoleuca, Porzana albicollis.
  • Song, Itirapina, 11/15/95. Cloudy, warm. Open campo with scattered trees.
Recording files on the disc
  • 13375.mp3 Song, calls. Near San Jose de Barreiro, 10/26/94. Sunny, 25°C. Open country with trees. With Turdus amaurochalinus, long song of Tapera naevia, Notiochelidon cyanoleuca, Porzana albicollis.
  • 10876.mp3 Song, Itirapina, 11/15/95. Cloudy, warm. Open campo with scattered trees.

More images

  • Display ritual. Near Queluz, São Paulo (Photograph by Fritz Mueller). 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 gubernetes yetapa Streamer-tailed Tyrant Tyrannidae,Fluvicolinae
CLEMENTS gubernetes yetapa Streamer-tailed Tyrant Tyrannidae,Fluvicolinae
AOU_HM gubernetes yetapa Streamer-tailed Tyrant Tyrannidae,Fluvicolinae
Source details
Identifier on this site
seb_species_0263
Account identifier
seb_account_0263
Account number on the disc
263
Source edition
CD03 / 2006 package
Original taxonomy scheme
WORLD
Structure status
heuristic; decoded_account_text and segment JSON remain authoritative