White-bellied Warbler

basileuterus hypoleucus

Parulidae · Wood-Warblers

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

The account

Description

12.5 cm. Head grey. An orange coronal streak bordered laterally by a broad black stripe. Superciliary white. Black stripe through eye. Upperparts olive green. Throat grayish white. Chest and belly yellowish.

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

Where it was recorded

The discs' own checklists select White-bellied Warbler at 8 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.

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

Call a sharp 'tsit'. Song a series of 6-9 notes similar to or not distinguishable from the song of Basileuterus culicivorus.

Behavior

Forages at low and middle level of trees and in underbrush, singly or in pairs, sometimes in mixed flocks.

Habitat and status

Not uncommon in primary forest, forest edge, gallery forest, scrubby secondary forest, near streams in dry forests.

Distribution

Found mostly away from the coast. Observed at Itatiba, Itapetininga (¹¹⁹). Below 1000 meters

Taxonomy notes

Basileuterus hypoleucus interbreeds with Basileuterus culicivorus where they meet. Where they occur together Basileuterus hypoleucus is found in dry forest and Basileuterus culicivorus in humid forest. Basileuterus hypoleucus might be just a morph of Basileuterus culicivorus (¹¹⁹).

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

Call. Serra da Canastra, 11/12/98. Cloudy, 25°C. Secondary forest.
Song, after playback, November 1, 2002, Casca d' Anta. Recorded by Jeremy Minns.

Recording files on the disc

7087.mp3 Call. Serra da Canastra, 11/12/98. Cloudy, 25°C. Secondary forest.
933.mp3 Song, after playback, November 1, 2002, Casca d' Anta. Recorded by Jeremy Minns.

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	basileuterus hypoleucus	White-bellied Warbler	Parulidae
CLEMENTS	basileuterus hypoleucus	White-bellied Warbler	Parulidae
AOU_HM	basileuterus hypoleucus	White-bellied Warbler	Parulidae

Open questions about this bird

Recovered evidence that has not been settled. It is published because leaving it out would misrepresent what the discs contain.

Later listening, kept separate from the disc's own claims

content_mc1 — review_identification: Basileuterus hypoleucus? (human_review; tentative)

Listening observation HRO_SCAN_0009

What was heard: Basileuterus hypoleucus

Relationship to the disc's evidence: supplements

Identification certainty: tentative · transcription certainty: clear · handwritten_original

Source details

Identifier on this site: seb_species_0362
Account identifier: seb_account_0362
Account number on the disc: 362
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative