Great Antshrike

taraba major

Thamnophilidae · Antbirds, Antwrens

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

The account

Description

19 cm. Heavy hooked bill grayish. Eyes dark red.

Male has a black crown, nape and back. Wings black with two white wing bars. Below white with gray on the lower belly. Tail black, the outer feathers with white barring.

Female is rufous above and white below with a concealed white dorsal patch.

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

Where it was recorded

The discs' own checklists select Great Antshrike at 1 locality.

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.

Itirapina ITSB

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 series of 'tuck's beginning slowly, accelerating and ascending slightly and ending with a rough 'naaah' sound. Calls are a rapid sequence of 'tuck's and 'karrrr ... karrrr...karrrr'.

Behavior

Generally occurs low and close to the ground in dense scrub.

Habitat and status

In scrub of clearings and borders of forests, second growth thickets.

Distribution

Inland in Estado São Paulo, Minas Gerais and Rio de Janeiro. Reported from Northern Estado São Paulo (São Geronimo, Vanuire, Presidente Epitacio (⁴⁰). To be expected in suitable habitat closer to the coast. A widespread species in South America.

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. Pocone, Pantanal, Mato Grosso, 8/4/97. Sunny, 30 °C. Scrub. WithOrtalis guttata.
Call,songs. Pirapora, 11/12/98. Cloudy, 25°C. Gallery forest, scrub. With Synallaxis frontalis, Pitangus sulphuratus, Cyclarhis gujanensis.
Call. Cornell Cat#47847. Presidente Medici, Ruropolis, Para, 10/12/89. Rain forest. Recording by M. Isler.

Recording files on the disc

5605.mp3 Song. Pocone, Pantanal, Mato Grosso, 8/4/97. Sunny, 30 °C. Scrub. WithOrtalis guttata.
14980.mp3 Call,songs. Pirapora, 11/12/98. Cloudy, 25°C. Gallery forest, scrub. With Synallaxis frontalis, Pitangus sulphuratus, Cyclarhis gujanensis.
411.wav Call. Cornell Cat#47847. Presidente Medici, Ruropolis, Para, 10/12/89. Rain forest. Recording by M. Isler.

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	taraba major	Great Antshrike	Thamnophilidae
CLEMENTS	taraba major	Great Antshrike	Thamnophilidae
AOU_HM	taraba major	Great Antshrike	Thamnophilidae

Source details

Identifier on this site: seb_species_0110
Account identifier: seb_account_0110
Account number on the disc: 110
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative