Restinga Antwren

formicivora littoralis

Thamnophilidae · Antbirds, Antwrens

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

The account

Description

5", 12.5 cm. Male similar to the interposita race of the extralimital Formicivora serrana occuring in Northern Estado Rio de Janeiro and Southern Minas Gerais, very dark, black below, dark brown above, with white narrow fringes on side of body often not visible, no white fringe on head. White spots on the wing covers small, tail feathers with small terminal white tips. Female above rufous brown, white superciliary and black cheeks, below buffy.

Female Disc 3 · 2006
Male Disc 3 · 2006

Each plate is labelled with the disc's own caption.

Where it was recorded

The discs' own checklists select Restinga Antwren at 2 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.

Marica MRRB
Serra dos Tucanos SDTC

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 fast series of low pitched "tchiuk" notes, calls high pitched "kiu-kiu-kiu" (⁶⁵).

Behavior

Foraging in pairs in lower stratum of open dry forest and scrub.

Breeding

Nest June to November, two eggs.

Habitat and status

Common in dry restinga scrub containing cacti and bromeliads consisting of vegetated zones (30-80 sqm) separated by a 5-15 meters expanse of sand area.

Distribution

Coastal central Estado Rio de Janeiro, near sea level only around Cabo Frio. Principally within an 80 km stretch of the coast between Saquarema and Cabo Frio (⁶⁵). Endangered, due to its small range and loss of habitat due to development.

Taxonomy notes

Originally described as a subspecies of Formicivora serrana (¹⁰⁴). Ridgely and Tudor (⁴⁴) consider it to be a separate species. For more information see ¹⁷⁵

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, calls?. Praia de Macambaba, Rio de Janeiro, 10/31/98. Recording by J. Minns.

Recording files on the disc

11067.mp3 Song, calls?. Praia de Macambaba, Rio de Janeiro, 10/31/98. Recording by J. 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
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	formicivora littoralis	Restinga Antwren	Thamnophilidae
CLEMENTS	formicivora littoralis	Restinga Antwren	Thamnophilidae
AOU_HM	formicivora littoralis	Restinga Antwren	Thamnophilidae

Source details

Identifier on this site: seb_species_0135
Account identifier: seb_account_0135
Account number on the disc: 135
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative