Dusky-tailed Antbird

drymophila malura

Thamnophilidae · Antbirds, Antwrens

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

The account

Description

13 cm. Male's entire head, throat, breast and upper belly streaked whitish and black. Back grayish-olive with black streaks. Wings and tail brownish-black, the wing coverts black with 2 white wing bars.

Female is like the male, but the white parts are more buffy.

Male Disc 3 · 2006
Female Disc 3 · 2006

Each plate is labelled with the disc's own caption.

Where it was recorded

The discs' own checklists select Dusky-tailed Antbird at 11 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. 1 has no usable coordinate and is listed below unplotted.

Campos do Jordão CASB
Fazenda Intervales FASB
Jureia-Peruibe JUSB position not recoverable
Lencois LESB
Nucleo Sta. Virginia NUSP
PE Carlos Botelho PCSB
Reserva Ecológica Guapiacú RERB
Rio de Janeiro RIRB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
Serras de Japi e Ermida SDSB

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 a metallic, chippered and rather fast 'zink zink-zikzikzikzikzik'. Call a repeated 'ziu ziu'(track #5) and 'zirrrr' (beginning of track #4).

Habitat and status

An upland endemic Drymophyla of southeastern Brazil. Common in undergrowth of humid forest and scrubby forest borders at higher elevations.

Distribution

Generally throughout, 400-1100 meters, but rare or absent at low elevations.

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

Ubatuba, 10/29/93. Cloudy, 22°C. With Attila rufus, Vireo olivaceus, Basileuterus culicivorus.
Song. Ubatuba, Nucleo Sta. Virginia, 10/25/94. Misty, 20°C. Secondary forest, scrub
Song. Fazenda Intervales,11/10/95. Sunny, 25 °C. Secondary forest. With Cyclarhis gujanensis, Hylophilus poicilotis.
Song. Fazenda Intervales, 11/29/97. Sunny, 27°C. Secondary forest. With Saltator similis, Turdus rufiventris, Attila phoenicurus.
Calls. Fazenda Intervales, 11/30/97. Sunny, 27°C. Secondary forest.
Call. Fazenda Intervales, 10/25/00. Sunny, 25°C. Primary forest. With Hylophilus poicilotis.

Recording files on the disc

14388.wav Ubatuba, 10/29/93. Cloudy, 22°C. With Attila rufus, Vireo olivaceus, Basileuterus culicivorus.
3870.mp3 Song. Ubatuba, Nucleo Sta. Virginia, 10/25/94. Misty, 20°C. Secondary forest, scrub
15278.mp3 Song. Fazenda Intervales,11/10/95. Sunny, 25 °C. Secondary forest. With Cyclarhis gujanensis, Hylophilus poicilotis.
648.mp3 Song. Fazenda Intervales, 11/29/97. Sunny, 27°C. Secondary forest. With Saltator similis, Turdus rufiventris, Attila phoenicurus.
10267.mp3 Calls. Fazenda Intervales, 11/30/97. Sunny, 27°C. Secondary forest.
10298.wav Call. Fazenda Intervales, 10/25/00. Sunny, 25°C. Primary forest. With Hylophilus poicilotis.

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	drymophila malura	Dusky-tailed Antbird	Thamnophilidae
CLEMENTS	drymophila malura	Dusky-tailed Antbird	Thamnophilidae
AOU_HM	drymophila malura	Dusky-tailed Antbird	Thamnophilidae

Source details

Identifier on this site: seb_species_0142
Account identifier: seb_account_0142
Account number on the disc: 142
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative