Parana Antwren
formicivora acutirostris
Thamnophilidae · Antbirds, Antwrens
- Disc 2 · 2001 not listed
- Disc 3 · 2006 listed
- Disc 1 · 2011 listed
The account
Description
14 cm. Male has a gray forehead. Weak short whitish superciliary and crescent below the eye. Crown, hindneck and upperparts chestnut olive. Wings black, the primaries and secondaries edged chestnut olive, the wing coverts black, tipped white. Tail graduated, black. Side of head, throat, breast and belly lead gray. Faint light grizzling on the cheeks. Flanks and crissum olive brown.
The female is like the male, but the throat, chest and belly are whitish with broad black streaks. Prominent white superciliary from the bill to above the eye.
-
Male Disc 3 · 2006 -
Female Disc 3 · 2006
Each plate is labelled with the disc's own caption.
The account, continued
Voice
Song a sequence of double notes 'tjup-ti tjup-ti tjup-ti . . . . ' Series of notes uneven and variable. Calls squealing notes ranging in length to 0.35 s. (132).
Behavior
Pairs or groups forage from 0-2 meters above ground in reed beds and other low vegetation.
Habitat and status
Locally not uncommon in littoral marshes dominated by Typha dominguensis, Asteraceae and Poacea, also in bushy wet meadows, riverine marshes, and mangrove swamps.
Distribution
This species is known only from a small area in coastal Parana and Santa Catarina, SE-Brazil from sea level. It was discovered in 1995 (134) in the lower third of the rivers Guaragua and Nhudiaquara in the Bay of Parnagua. Subsequently the species was found around Mathinos and Guaratuba, Parana and near Garuva, Santa Catarina. Around Guaratuba known from Ilha do Chapeu, Chapeuzinho and the lower thirds of the São Joao, Cubatao, São Joazinho, Descoberto, Boguacu, Preto, Parado and Alegre rivers (135) . Not known from Estado São Paulo. To be looked for in the area around Cananeia, Col. Santa Maria, and Ariri in Typha swamps.
Taxonomy notes
Moved into the genus Formicivora (136). Due to restriction of the populations of this species in small areas subject to alteration by human activity and invasion of foreign plant species this species is considered to be endangered.
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
-
August 2002, Guaratuba, Parana, swamp, recorded by Jeremy Minns. With Phacellodomus erythrophthalmus, Pitangus sulphuratus.
Recording files on the disc
- 7728.mp3 August 2002, Guaratuba, Parana, swamp, recorded by Jeremy Minns. With Phacellodomus erythrophthalmus, Pitangus sulphuratus.
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 — not 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 3 · 2006
aux_nonzero- Disc 1 · 2011
aux_nonzero
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
In the 2011 Disc 1 revision, part of this account was truncated at exactly 512 bytes (a 2011 mastering defect). The earlier releases preserve the complete text.
Truncated sections in the 2011 revision: description; distribution. The complete earlier text is shown beneath each truncated section.
Description Disc 1 · 2011
14 cm. Male has a gray forehead. Weak short whitish superciliary and crescent below the eye. Crown, hindneck and upperparts chestnut olive. Wings black, the primaries and secondaries edged chestnut olive, the wing coverts black, tipped white. Tail graduated, black. Side of head, throat, breast and belly lead gray. Faint light grizzling on the cheeks. Flanks and crissum olive brown.
The female is like the male, but the throat, chest and belly are whitish with broad black streaks. Prominent white supercilia
Disc 1 (2011) text ends here — truncated at exactly 512 bytes in the 2011 mastering (historical defect, kept as recovered).
Complete earlier text — Disc 3 · 2006 (34 bytes lost in 2011)
14 cm. Male has a gray forehead. Weak short whitish superciliary and crescent below the eye. Crown, hindneck and upperparts chestnut olive. Wings black, the primaries and secondaries edged chestnut olive, the wing coverts black, tipped white. Tail graduated, black. Side of head, throat, breast and belly lead gray. Faint light grizzling on the cheeks. Flanks and crissum olive brown.
The female is like the male, but the throat, chest and belly are whitish with broad black streaks. Prominent white superciliary from the bill to above the eye.
Shown for comparison from the Disc 3 · 2006; it does not repair or replace the Disc 1 · 2011 historical text above.
Voice Disc 1 · 2011
Song a sequence of double notes 'tjup-ti tjup-ti tjup-ti . . . . ' Series of notes uneven and variable. Calls squealing notes ranging in length to 0.35 s. (132).
Behavior Disc 1 · 2011
Pairs or groups forage from 0-2 meters above ground in reed beds and other low vegetation.
Habitat and status Disc 1 · 2011
Locally not uncommon in littoral marshes dominated by Typha dominguensis, Asteraceae and Poacea, also in bushy wet meadows, riverine marshes, and mangrove swamps.
Distribution Disc 1 · 2011
This species is known only from a small area in coastal Parana and Santa Catarina, SE-Brazil from sea level. It was discovered in 1995 (134) in the lower third of the rivers Guaragua and Nhudiaquara in the Bay of Parnagua. Subsequently the species was found around Mathinos and Guaratuba, Parana and near Garuva, Santa Catarina. Around Guaratuba known from Ilha do Chapeu, Chapeuzinho and the lower thirds of the São Joao, Cubatao, São Joazinho, Descoberto, Boguacu, Preto, Parado and Alegre rivers (135) . Not
Disc 1 (2011) text ends here — truncated at exactly 512 bytes in the 2011 mastering (historical defect, kept as recovered).
Complete earlier text — Disc 3 · 2006 (120 bytes lost in 2011)
This species is known only from a small area in coastal Parana and Santa Catarina, SE-Brazil from sea level. It was discovered in 1995 (134) in the lower third of the rivers Guaragua and Nhudiaquara in the Bay of Parnagua. Subsequently the species was found around Mathinos and Guaratuba, Parana and near Garuva, Santa Catarina. Around Guaratuba known from Ilha do Chapeu, Chapeuzinho and the lower thirds of the São Joao, Cubatao, São Joazinho, Descoberto, Boguacu, Preto, Parado and Alegre rivers (135) . Not known from Estado São Paulo. To be looked for in the area around Cananeia, Col. Santa Maria, and Ariri in Typha swamps.
Shown for comparison from the Disc 3 · 2006; it does not repair or replace the Disc 1 · 2011 historical text above.
Taxonomy notes Disc 1 · 2011
Moved into the genus Formicivora (136). Due to restriction of the populations of this species in small areas subject to alteration by human activity and invasion of foreign plant species this species is considered to be endangered.
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 acutirostris | Parana Antwren | Thamnophilidae |
| CLEMENTS | stymphalornis acutirostris | Parana Antwren | Thamnophilidae |
| AOU_HM | stymphalornis acutirostris | Parana Antwren | Thamnophilidae |
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.
References that could not be resolved
http — external target not reconstructed (preserved_unresolved)
Review notes
review_0011
Recovered review record — open: external_link classification; unmatched
Evidence: URL syntax · Recommended: Open the referenced media in a safe player/viewer and confirm species/type; do not alter the source file.
Review v1.1 decision — resolved_as_historical_external_link
Reviewer: ChatGPT structural audit
Notes: Recovered text unambiguously encodes a historical Mangoverde webpage, not a local media file. Likely reconstructed URL: http://www.mangoverde.com/birdsound/picpages/pic109-116-1.html . Preserve the recovered text even if the URL is no longer live.
External references
ext_0001
Recovered text: http: //www.mangoverde.com/birdsound/picpages/pic109-116-1.html . Female. Webpage on Mangoverde,
Reconstruction status: not attempted; preserve recovered text
Later reconstruction: http://www.mangoverde.com/birdsound/picpages/pic109-116-1.html (high-confidence reconstruction from recovered line-broken URL text; not tested for current availability)
Source details
- Identifier on this site
- seb_species_0131
- Account identifier
- seb_account_0131
- Account number on the disc
- 131
- Source edition
- CD03 / 2006 package
- Original taxonomy scheme
- WORLD
- Structure status
- heuristic; decoded_account_text and segment JSON remain authoritative