Eye-ringed Tody-Tyrant

hemitriccus orbitatus

Tyrannidae,Elaeninae · Tyrannulets

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

The account

Description

10 cm. Iris dark brown. Above olive-green with a broad light supraloral stripe and white eye ring. Tertials with broad white borders. Below yellowish with olive-green streaks on the throat and olive clouding on the chest.

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

Where it was recorded

The discs' own checklists select Eye-ringed Tody-Tyrant at 15 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.

Barreiro Rico BRSB
Boraceia BOSB
Fazenda Paraiso PASB
Jureia-Peruibe JUSB position not recoverable
Lencois LESB
Nucleo Sta. Virginia NUSP
Parati PARB
PE Jacupiranga PJSB
Reserva Ecológica Guapiacú RERB
Rio de Janeiro RIRB
Serra da Cantareira SRSB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
Ubatuba UBSB
Vassununga VASB

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

Usually a low 'tir.r.r.r.r.r.r.r' , sometimes at various different pitches or descending in pitch.

Behavior

Occurs in the lower and middle stratus of forest interior. Forages by performing upward strikes from a perch. Does not follow mixed flocks.

Habitat and status

An endemic tyrant flycatcher of the forest interior. Uncommon to fairly common in the interior of secondary and primary rain forest.

Distribution

Throughout the Serra do Mar area, Rio de Janeiro, Parati, Ubatuba, Serra dos Orgãos and in the Reserva Ecológica Guapiacú . Up to 1000 meters (⁴⁴).

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. Picinguaba, east of Ubatuba, 11/20/98. Cloudy, light rain, 20°C. Secondary forest. With Attila rufus.
Calls. Rio Escuro, near Ubatuba, 10/13/99. Sunny, 27°C. Forest. With Procnias nudicollis, Myiodynastes maculatus.
Call. Rio Escuro, near Ubatuba, 10/13/99. Sunny, 27°C. Forest. With Myiodynastes maculatus, Procnias nudicollis.
Calls. 10/15/99, Corisco trail, Picinguaba, east of Ubatuba. Sunny, 30°C. Primary forest. With Dysithamnus stictothorax at the beginning.
Call. Cornell Cat#19954, Fazenda do Pontal, Rio Grande do Sul, 10/18/78. Recording by W. Belton.
First part-Calls, 11/22/98, Rio Escuro near Ubatuba. Sunny, 20°C. Secondary forest. Second part-Calls, 10/30/00, Reserva da Serra do Mar, near Cachoeira de Macacu. Cloudy, 25°C.

Recording files on the disc

2435.wav Calls. Picinguaba, east of Ubatuba, 11/20/98. Cloudy, light rain, 20°C. Secondary forest. With Attila rufus.
12226.wav Calls. Rio Escuro, near Ubatuba, 10/13/99. Sunny, 27°C. Forest. With Procnias nudicollis, Myiodynastes maculatus.
6929.wav Call. Rio Escuro, near Ubatuba, 10/13/99. Sunny, 27°C. Forest. With Myiodynastes maculatus, Procnias nudicollis.
5470.wav Calls. 10/15/99, Corisco trail, Picinguaba, east of Ubatuba. Sunny, 30°C. Primary forest. With Dysithamnus stictothorax at the beginning.
15274.wav Call. Cornell Cat#19954, Fazenda do Pontal, Rio Grande do Sul, 10/18/78. Recording by W. Belton.
224.mp3 First part-Calls, 11/22/98, Rio Escuro near Ubatuba. Sunny, 20°C. Secondary forest. Second part-Calls, 10/30/00, Reserva da Serra do Mar, near Cachoeira de Macacu. Cloudy, 25°C.

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	hemitriccus orbitatus	Eye-ringed Tody-Tyrant	Tyrannidae,Elaeninae
CLEMENTS	hemitriccus orbitatus	Eye-ringed Tody-Tyrant	Tyrannidae,Elaeninae
AOU_HM	hemitriccus orbitatus	Eye-ringed Tody-Tyrant	Tyrannidae,Elaeninae

Source details

Identifier on this site: seb_species_0227
Account identifier: seb_account_0227
Account number on the disc: 227
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative