Grassland Sparrow

ammodramus humeralis

Emberizidae · Emberizine Sparrows

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

The account

Description

13 cm. Lores yellow, eye ring white; brownish gray on mantle and top of head; mantle with black streaks; inner flight feathers edged chestnut; bend of wing yellow; white underparts; flanks buffy grayish. Juvenile has dark streaking on breast.

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

Where it was recorded

The discs' own checklists select Grassland Sparrow at 10 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

Call 'tik', song subject to geographic variation, in Southeast Brazil ' zik eeeeee trrrrrrr'.

Behavior

Forages in high grass and on the ground, quite shy. Sometimes in groups.

Habitat and status

Not uncommon in grassy areas and cerrado and campo with high grass and a few bushes.

Distribution

Mostly inland. IN Estado São Paulo found closer to the coast near Itapetininga, Ipanema, Itapeva, Itararé, Bananal, São Jose do Barreiro (¹¹⁹), Itatiba, Ipiranga, Mogi das Cruzes, Taubate. In Estado Rio de Janeiro found at Nova Friburgo, Lagoa Feia, Olalla (⁴⁰). To 1100 meters

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. November 20, 1996. Santa Cruz, Bolivia. Lomas de Arena, grassy sand flats with dry forest. 30°C, sunny, windy.
Song, November 14, 1994, Itirapina. open campo with high grass, et the end Polystictus pectoralis.

Recording files on the disc

4286.mp3 Song. November 20, 1996. Santa Cruz, Bolivia. Lomas de Arena, grassy sand flats with dry forest. 30°C, sunny, windy.
6742.mp3 Song, November 14, 1994, Itirapina. open campo with high grass, et the end Polystictus pectoralis.

More images

Juvenile Disc 3 · 2006
Song, Itirapina, São Paulo, November 1994. Disc 3 · 2006

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.

Names by release

Grassland Sparrow myospiza humeralis Disc 2 · 2001
Grassland Sparrow ammodramus humeralis Disc 3 · 2006, Disc 1 · 2011

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	ammodramus humeralis	Grassland Sparrow	Emberizidae
CLEMENTS	ammodramus humeralis	Grassland Sparrow	Emberizidae
AOU_HM	ammodramus humeralis	Grassland Sparrow	Emberizidae

Source details

Identifier on this site: seb_species_0446
Account identifier: seb_account_0446
Account number on the disc: 446
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative