Tufted Antshrike

mackenziaena severa

Thamnophilidae · Antbirds, Antwrens

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

The account

Description

22 cm. A large, dark antshrike with a prominent pointed tuft. Tail shorter than that of Mackenziaena leachii.

The male is grayish black with a black head.

The female has a rufous crown and is otherwise brownish black with narrow buff bars.

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

Where it was recorded

The discs' own checklists select Tufted Antshrike at 21 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 recorded locality lies beyond the map's edge and is listed below instead.1 has no usable coordinate and is listed below unplotted.

Barreiro Rico BRSB
Boraceia BOSB
Fazenda Intervales FASB
Fazenda Paraiso PASB
Ilha São Sebastião SSSB
Itirapina ITSB
Jureia-Peruibe JUSB position not recoverable
Lencois LESB
Morro do Diabo MOSB outside the map
Nucleo Sta. Virginia NUSP
Parati PARB
PE Carlos Botelho PCSB
PE Jacupiranga PJSB
Reserva Ecológica Guapiacú RERB
Rio de Janeiro RIRB
Serra Bocaina SESB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
Serras de Japi e Ermida SDSB
Sete Barras STSB
Ubatuba UBSB

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 an ascending series of whistles 'psiu pseee pseee pseee pseee'; slower, more emphasized and drawn out than those of Mackenziaena leachi. Calls are a rough 'kree' and a low 'craa craa'. The warning call is a long repeated descending whistle uttered by both male and female, like 'wiiuu wiiuu...'

Behavior

Skulking in low stratum of forest. More often heard than seen.

Habitat and status

Fairly common in humid primary or secondary forest and forest borders. Never far away from forest unlike Mackenziaena leachii.

Distribution

Throughout the area from sea level to about 1500 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, Serra da Mantiqueira (Itatiaia NP), 03/12/94. Cloudy, some rain, 20°C. With Crypturellus obsoletus, Drymophila ochropyga.
Song. PE Jacupiranga, Caverna do Diabo, 10/23/94. Sunny, 25°C. Open scrub. With Procnias nudicollis, Tapera naevia.
Call. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest.
Call. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest. With Attila phoenicurus, Basileuterus culicivorus, Procnias nudicollis.
Warning calls. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Primary forest.
Call. Serra da Mantiqueira, Tres Picos Trail, 10/22/99. Clear, 25°C. Primary forest.

Recording files on the disc

1974.wav Song, Serra da Mantiqueira (Itatiaia NP), 03/12/94. Cloudy, some rain, 20°C. With Crypturellus obsoletus, Drymophila ochropyga.
13318.wav Song. PE Jacupiranga, Caverna do Diabo, 10/23/94. Sunny, 25°C. Open scrub. With Procnias nudicollis, Tapera naevia.
14136.mp3 Call. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest.
4490.mp3 Call. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest. With Attila phoenicurus, Basileuterus culicivorus, Procnias nudicollis.
7066.wav Warning calls. Picinguaba, east of Ubatuba, 10/15/99. Sunny, 27°C. Primary forest.
3823.wav Call. Serra da Mantiqueira, Tres Picos Trail, 10/22/99. Clear, 25°C. Primary forest.

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	mackenziaena severa	Tufted Antshrike	Thamnophilidae
CLEMENTS	mackenziaena severa	Tufted Antshrike	Thamnophilidae
AOU_HM	mackenziaena severa	Tufted Antshrike	Thamnophilidae

Source details

Identifier on this site: seb_species_0108
Account identifier: seb_account_0108
Account number on the disc: 108
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative