Lesser Elaenia

elaenia chiriquensis

Tyrannidae,Elaeninae · Tyrannulets

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

The account

Description

14 cm. A hard bird to identify if it does not call. However this species is rare in coastal areas.

Not particularly crested with some white in the crown and a white eye ring. Above olive-gray. Wings dusky with two white wing bars. Below lighter, the belly yellowish white. Gives sometimes a quite grayish impression.

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

Where it was recorded

The discs' own checklists select Lesser Elaenia at 9 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

Gives a variety of calls including a high 'wiib wiib wiib', a fast and short 'jide or jiwe' and an almost one syllabled 'jeba jeba'. Ridgely also describes a longer 'freeee' (⁴⁴). Song is a repeated 'tchiwi tchiwi chi chi' sung as duet etc.

Behavior

Less conspicuous than Elaenia flavogaster and sometimes perches well hidden in a tree. A upward-hover gleaner (⁷⁴).

Habitat and status

Quite regular in open cerrado, grassland with scrub and scrubby areas, gardens, clearings.

Distribution

Not regularly encountered at the coast. More common in dryer areas inland. Pinto lists the species from Mogi das Cruzes (Estado São Paulo, 1933) and from São Paulo City (Ipiranga, 1912 and 1941), both locations on the altiplano, but relatively close to the coast. Otherwise recorded from Estado São Paulo from Ipanema and Itatiba (close to São Paulo), Itararé (N of Curitiba), and further inland from Franca, Rincao, São Carlos and Paraúna. Found near Itirapina (Remold). Below 2000 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

Song. Itirapina, 11/14/95. Sunny, 30 °C. Scrub in cerrado.
Call. Itirapina, 11/14/95. Sunny, 30 °C. Scrub. With Camptostoma obsoletum.
Call. Serra da Canastra, 11/10/98. Cloudy, 25°C. Scrubby slopes.
Call. Serra da Canastra, 11/11/98. Cloudy, 25°C. 0pen woods, pastures. With Zonotrichia capensis.
Call, Serra de Canastra, Minas Gerais, 11/10/98. Cloudy, 25°C. Open scrub.

Recording files on the disc

10869.mp3 Song. Itirapina, 11/14/95. Sunny, 30 °C. Scrub in cerrado.
1119.mp3 Call. Itirapina, 11/14/95. Sunny, 30 °C. Scrub. With Camptostoma obsoletum.
4374.wav Call. Serra da Canastra, 11/10/98. Cloudy, 25°C. Scrubby slopes.
2063.mp3 Call. Serra da Canastra, 11/11/98. Cloudy, 25°C. 0pen woods, pastures. With Zonotrichia capensis.
9888.wav Call, Serra de Canastra, Minas Gerais, 11/10/98. Cloudy, 25°C. Open scrub.

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	elaenia chiriquensis	Lesser Elaenia	Tyrannidae,Elaeninae
CLEMENTS	elaenia chiriquensis	Lesser Elaenia	Tyrannidae,Elaeninae
AOU_HM	elaenia chiriquensis	Lesser Elaenia	Tyrannidae,Elaeninae

Source details

Identifier on this site: seb_species_0197
Account identifier: seb_account_0197
Account number on the disc: 197
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative