Tawny-throated Leafscraper

sclerurus mexicanus

Furnariidae,Philydorinae · Foliage-gleaners

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

The account

Description

16 cm. Upper parts dark warm brown, darker on the crown and nape. Bright rufous rump. Below reddish chestnut-brown, the belly dark brown. Tail blackish brown, Wings dark brown.

Immature duller, with much less rufous.

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

Where it was recorded

The discs' own checklists select Tawny-throated Leafscraper at 4 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

Song a descending high squeezed 'piii piii piii piii piii pe pe', 2-3 seconds long, vaguely reminiscent of Basileuterus leucoblepharus. Call a sharp 'szet szet'.

Behavior

Terrestrial and solitary, scraping on the ground and turning over leaves.

Habitat and status

In humid primary and secondary forest.

Distribution

Occurs probably rarely in the Serra do Mar of Estado do Rio de Janeiro and northeast São Paulo (¹⁵, ⁴⁴). Found in the forests near Ubatuba(¹³). Below 1500 meters.

Taxonomy notes

Song is a descending row of high whistles like that of Sclerurus caudacutus which occurs sympatrically further north in Espirito Santo, but with different intonation and structure.

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, call. Cornell Cat#48094. Alta Floresta, Rio Cristallino, 11/06/89. With Cercomacra cinerascens, Columba subvinacea. Recording by P. Isler.

Recording files on the disc

15781.wav Song, call. Cornell Cat#48094. Alta Floresta, Rio Cristallino, 11/06/89. With Cercomacra cinerascens, Columba subvinacea. Recording by P. Isler.

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	sclerurus mexicanus	Tawny-throated Leafscraper	Furnariidae,Philydorinae
CLEMENTS	sclerurus mexicanus	Tawny-throated Leafscraper	Furnariidae,Philydorinae
AOU_HM	sclerurus mexicanus	Tawny-throated Leafscraper	Furnariidae,Philydorinae

Source details

Identifier on this site: seb_species_0094
Account identifier: seb_account_0094
Account number on the disc: 94
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative