Salvadori's Antwren
myrmotherula minor
Thamnophilidae · Antbirds, Antwrens
- Disc 2 · 2001 listed
- Disc 3 · 2006 listed
- Disc 1 · 2011 listed
The account
Description
9 cm. Male dark gray with a black bib reaching down to the chest. Blackish wings with 2 white wing bars. Crissum grey, finely barred black. Tail black with a white terminal band.
The female is unique among southeast Brazilian antwrens in having a gray crown, otherwise a light brownish-olive-gray above. Wings dusky-gray with two buff bars. Throat white. Below light buff. Tail feathers dusky-brown with rusty edges and a beige terminal band.
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The disc records this picture against the bird without a caption. Disc 3 · 2006
Where it was recorded
The discs' own checklists select Salvadori's Antwren at 8 localities.
- Boraceia BOSB
- Ilha São Sebastião SSSB
- Jureia-Peruibe JUSB position not recoverable
- Parati PARB
- Reserva Ecológica Guapiacú RERB
- Serra dos Orgãos SRRB
- Serra dos Tucanos SDTC
- Ubatuba UBSB
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.
The account, continued
Voice
Call a 'cleek' or 'deeet'. Also 'tjet tjet' and a descending 'dje dje dje dja' (song?).
According to Whitney and Pacheco the species has a complex song consisting of two sections. The beginning consists of 4-6 descending whistles ending with a sharper syllable, after 0.25 sec the second section starts which consists of only 3-4 whistles, descends more rapidly and lacks the terminal sharper syllable.
Behavior
Moves rapidly through trees and bushes from close to the ground to canopy level, usually in the 2-8 meters range, most often in the 4-5 meters range. Forages in mixed species groups (e.g. Lepidocolaptes fuscus, Philydor atricapillus, Hypoedaleus guttatus, Drymophila squamata, Dysithamnus stictothorax, Dysithamnus mentalis, Terenura maculata 58).
Tobias et al. note that there might be niche overlap with other Myrmotherula species, because Myrmotherula minor is never found in company of Myrmotherula unicolor, for example (59).
Habitat and status
Occurs at low density in the interior of primary or old secondary mossy humid rainforest and old banana plantations with plenty of epiphytes and lianas. Almost always near either standing or flowing water, usually not higher than 300 meters ( 60 ). Its distribution has certainly been drastically reduced and fragmented by habitat loss.
Distribution
Endemic to the Serra do Mar near Ubatuba and Parati and in the Serra Bocaina. An isolated population near Peruibe in Jureia. To 500 meters.
Taxonomy notes
For more information see 174
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
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Calls. Cornell Cat#81413. Sooretama, Espirito Santo, 6/30/87. Recording by P. K. Donahue.
Recording files on the disc
- 1413.wav Calls. Cornell Cat#81413. Sooretama, Espirito Santo, 6/30/87. Recording by P. K. Donahue.
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
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: behavior. The complete earlier text is shown beneath each truncated section.
Description Disc 1 · 2011
9 cm. Male dark gray with a black bib reaching down to the chest. Blackish wings with 2 white wing bars. Crissum grey, finely barred black. Tail black with a white terminal band.
The female is unique among southeast Brazilian antwrens in having a gray crown, otherwise a light brownish-olive-gray above. Wings dusky-gray with two buff bars. Throat white. Below light buff. Tail feathers dusky-brown with rusty edges and a beige terminal band.
Voice Disc 1 · 2011
Call a 'cleek' or 'deeet'. Also 'tjet tjet' and a descending 'dje dje dje dja' (song?).
According to Whitney and Pacheco the species has a complex song consisting of two sections. The beginning consists of 4-6 descending whistles ending with a sharper syllable, after 0.25 sec the second section starts which consists of only 3-4 whistles, descends more rapidly and lacks the terminal sharper syllable.
Behavior Disc 1 · 2011
Moves rapidly through trees and bushes from close to the ground to canopy level, usually in the 2-8 meters range, most often in the 4-5 meters range. Forages in mixed species groups (e.g. Lepidocolaptes fuscus, Philydor atricapillus, Hypoedaleus guttatus, Drymophila squamata, Dysithamnus stictothorax, Dysithamnus mentalis, Terenura maculata 58).
Tobias et al. note that there might be niche overlap with other Myrmotherula species, because Myrmotherula minor is never found in company of Myrmotherula u
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 (28 bytes lost in 2011)
Moves rapidly through trees and bushes from close to the ground to canopy level, usually in the 2-8 meters range, most often in the 4-5 meters range. Forages in mixed species groups (e.g. Lepidocolaptes fuscus, Philydor atricapillus, Hypoedaleus guttatus, Drymophila squamata, Dysithamnus stictothorax, Dysithamnus mentalis, Terenura maculata 58).
Tobias et al. note that there might be niche overlap with other Myrmotherula species, because Myrmotherula minor is never found in company of Myrmotherula unicolor, for example (59).
Shown for comparison from the Disc 3 · 2006; it does not repair or replace the Disc 1 · 2011 historical text above.
Habitat and status Disc 1 · 2011
Occurs at low density in the interior of primary or old secondary mossy humid rainforest and old banana plantations with plenty of epiphytes and lianas. Almost always near either standing or flowing water, usually not higher than 300 meters ( 60 ). Its distribution has certainly been drastically reduced and fragmented by habitat loss.
Distribution Disc 1 · 2011
Endemic to the Serra do Mar near Ubatuba and Parati and in the Serra Bocaina. An isolated population near Peruibe in Jureia. To 500 meters.
Taxonomy notes Disc 1 · 2011
For more information see 174
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 | myrmotherula minor | Salvadori's Antwren | Thamnophilidae |
| CLEMENTS | myrmotherula minor | Salvadori's Antwren | Thamnophilidae |
| AOU_HM | myrmotherula minor | Salvadori's Antwren | Thamnophilidae |
Source details
- Identifier on this site
- seb_species_0127
- Account identifier
- seb_account_0127
- Account number on the disc
- 127
- Source edition
- CD03 / 2006 package
- Original taxonomy scheme
- WORLD
- Structure status
- heuristic; decoded_account_text and segment JSON remain authoritative