Crested Oropendola

psarocolius decumanus

Icteridae,Icterinae · Troupials

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

The account

Description

Male 46-48 cm, female 36-38 cm. A large long billed Oropendola, black all over with rusty color restricted to the rump and crissum. Tail with the exception of the central feathers bright yellow. Bill ivory yellow or greenish. Iris bluish.

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

Where it was recorded

The discs' own checklists select Crested Oropendola at 7 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.

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

Call 'chak', fast 'chachachacha..' Song is an accelerating gurgling sequence of calls that increase in frequency at the end. The song in vocalization #3 recorded south of Pocone in the Pantanal might be the song of Psarocolius bifasciatus which was observed in the NW of the Pantanal in forested areas (¹¹⁴).

Behavior

Forages in small groups in canopy of high trees, sometimes at fruit-bearing low bushes. Sometimes beats wings right after the song.

Breeding

Nests are about a meter long, pendulous, usually in a free standing tree at the forest border.

Habitat and status

Not uncommon in humid coastal land in secondary forest and forest edge, cultivated areas with some tall trees, forest edge. Inland in dry forest and forest edge.

Distribution

Throughout. In Estado São Paulo reported inland near Aracacu, and at the coast in Ubatumirim (¹¹⁹), Picinguaba, Pereque (Remold unpubl.). Up to 1000 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. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest border. With Cacicus haemorrhous.
Calls. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest. With Procnias nudicollis.
Song, August 15, 1997. Pantanal, open swamp with gallery forest, 30°C, humid, some clouds.

Recording files on the disc

13153.mp3 Song. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest border. With Cacicus haemorrhous.
9460.mp3 Calls. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Forest. With Procnias nudicollis.
6503.mp3 Song, August 15, 1997. Pantanal, open swamp with gallery forest, 30°C, humid, some clouds.

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	psarocolius decumanus	Crested Oropendola	Icteridae,Icterinae
CLEMENTS	psarocolius decumanus	Crested Oropendola	Icteridae,Icterinae
AOU_HM	psarocolius decumanus	Crested Oropendola	Icteridae,Icterinae

Source details

Identifier on this site: seb_species_0468
Account identifier: seb_account_0468
Account number on the disc: 468
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative