Eared Pygmy-Tyrant

myiornis auricularis

Tyrannidae,Elaeninae · Tyrannulets

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

The account

Description

8 cm. Above olive-green. Brownish on crown. Sides of head dark reddish buff. A black area below the eye and a black crescent on the ear coverts separated from the olive-green neck by a white crescent. Wings dusky-black with olive-yellow margins to the primaries and two indistinct wing bars. White throat streaked blackish Below yellow streaked olive on the breast. Tail dusky-black.

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

Where it was recorded

The discs' own checklists select Eared Pygmy-Tyrant at 22 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.

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

A clear trill often followed or preceded by single 'tik....tik...' notes.

Behavior

Forages in middle stratum of dense woodland borders by performing upward strikes. Relatively easy to observe.

Breeding

We found a pocket shaped nest with side entrance in a bank on the side of a road near Iporanga, São Paulo State, on 11-5-1995 (M. B. Ramos Neto, H. G. Remold).

Habitat and status

Relatively common at borders and near breaks in dense humid secondary and primary forest. Not found in the interior of dense forests.

Distribution

Throughout the area. PE Jacupiranga State Park, Fazenda Intervales, Apiai, Serra do Mar, Itatiaia, Serra dos Orgãos. To 1500 meters in the Serra Mantiqueira. More common above 600 meters and rarely at sea level.

Taxonomy notes

The smallest tyrannid of southeast Brazil.

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

Calls, Ubatuba, Nucleo Sta. Virginia, 10/31/93. Sunny, 25°C. With Saltator similis.
Calls. Ubatuba, Nucleo Sta. Virginia, 10/25/94. Misty, 20°C. Secondary forest edge. With Synallaxis spixi.
Calls. Fazenda Intervales, 11/30/97. Sunny, 27°C. Secondary forest.
Calls. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest edge. With Procnias ruficollis, Trogon rufus.
Calls. Fazenda Intervales, Barra Grande road. 10/25/00. Cloudy, 20°C. Primary forest With Carpornis cucullatus.

Recording files on the disc

1553.wav Calls, Ubatuba, Nucleo Sta. Virginia, 10/31/93. Sunny, 25°C. With Saltator similis.
14809.mp3 Calls. Ubatuba, Nucleo Sta. Virginia, 10/25/94. Misty, 20°C. Secondary forest edge. With Synallaxis spixi.
3782.mp3 Calls. Fazenda Intervales, 11/30/97. Sunny, 27°C. Secondary forest.
8404.mp3 Calls. Fazenda Intervales, 11/30/97. Sunny, 27°C. Primary forest edge. With Procnias ruficollis, Trogon rufus.
12408.wav Calls. Fazenda Intervales, Barra Grande road. 10/25/00. Cloudy, 20°C. Primary forest With Carpornis cucullatus.

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	myiornis auricularis	Eared Pygmy-Tyrant	Tyrannidae,Elaeninae
CLEMENTS	myiornis auricularis	Eared Pygmy-Tyrant	Tyrannidae,Elaeninae
AOU_HM	myiornis auricularis	Eared Pygmy-Tyrant	Tyrannidae,Elaeninae

Source details

Identifier on this site: seb_species_0224
Account identifier: seb_account_0224
Account number on the disc: 224
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative