Fuscous Flycatcher

cnemotriccus fuscatus

Tyrannidae,Fluvicolinae · Fluvicoline Flycatchers

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

The account

Description

14 cm. Bill dark. Rufous or grayish-brown above with a conspicuous white superciliary stripe. Wings blackish with two buff wing bars. White throat. Olive-yellow breast with a brown wash. Yellow belly.

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

Where it was recorded

The discs' own checklists select Fuscous Flycatcher at 21 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 has no usable coordinate and is listed below unplotted.

Angra dos Reis ANRB
Assis ASSB
Barreiro Rico BRSB
Fazenda Campininha FZSB
Fazenda Intervales FASB
Fazenda Paraiso PASB
Ilha do Cardoso ILSB
Ilha São Sebastião SSSB
Itirapina ITSB
Jureia-Peruibe JUSB position not recoverable
Marica MRRB
Parati PARB
Pariquera-Abaixo PESB
PE Jacupiranga PJSB
Rio de Janeiro RIRB
Santa Barbara do Rio Pardo SNSB
Serra da Cantareira SRSB
Serra dos Orgãos SRRB
Serra dos Tucanos SDTC
Ubatuba UBSB
Vassununga VASB

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

The eastern coastal form fuscatus calls 'wip..wip..wiu..witi...wip...' (cut #2). Ridgely (⁴⁴) records a fast jumbled series of clear notes, e.g. 'chip, weety-weety-weety, chedip'.

The western inland form bimaculatus calls 'wuiiiii'(cut #1), and 'wi-tchi-dip' (cut #3).

Behavior

Forages within dense undergrowth. The main foraging technique is enclosed perch hawking from within the foliage (⁷⁴).

Breeding

Nests in crevices or tree cavities (¹⁰⁶).

Habitat and status

An uncommon flycatcher in dense undergrowth and thickets of woodland, restinga, gallery and other forest patches. The form fuscatus might be confined to restinga, a fast disappearing habitat in southeast Brazil (See ⁹⁷). This species might be considered as vulnerable in Southeast Brazil.

Distribution

Fuscatus is reported from Rio de Janeiro state (Rio de Janeiro, Sepitiba, Porto Real) and eastern São Paulo state (Ubatuba, São Sebastião, Piassaguera, Iguape, Cananeia, Ipiranga, Campinas, Ipanema)(⁴⁰).

Bimaculatus is reported from the interior of São Paulo state (Franca, Barretos, Ituverava, Rio Tiete, Salto Grande etc.)(⁷¹). To 900 meters (⁴⁴).

Taxonomy notes

Most likely two sibling species are involved (⁸⁸).

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

Call (possibly of separate inland species bimaculatus). Serra das Rosas near Franca, 11/7/98. Rain in the morning, then sunny, 27°C. Dry secondary forest. With Vireo olivaceus, Piaya cayana.
Calls. Cornell Cat#19951. Fazenda do Portal, Rio Grande do Sul, 10/18/78. Recording by W. Belton.
Call (possibly of the inland form bimaculatus). Cornell Cat#57849. Porto Jofre, Mato Grosso, 8/8/90. With Leptotila verreauxi. Recording by D. W. Finch.

Recording files on the disc

12225.wav Call (possibly of separate inland species bimaculatus). Serra das Rosas near Franca, 11/7/98. Rain in the morning, then sunny, 27°C. Dry secondary forest. With Vireo olivaceus, Piaya cayana.
9988.wav Calls. Cornell Cat#19951. Fazenda do Portal, Rio Grande do Sul, 10/18/78. Recording by W. Belton.
644.wav Call (possibly of the inland form bimaculatus). Cornell Cat#57849. Porto Jofre, Mato Grosso, 8/8/90. With Leptotila verreauxi. Recording by D. W. Finch.

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	cnemotriccus fuscatus	Fuscous Flycatcher	Tyrannidae,Fluvicolinae
CLEMENTS	cnemotriccus fuscatus	Fuscous Flycatcher	Tyrannidae,Fluvicolinae
AOU_HM	cnemotriccus fuscatus	Fuscous Flycatcher	Tyrannidae,Fluvicolinae

Source details

Identifier on this site: seb_species_0247
Account identifier: seb_account_0247
Account number on the disc: 247
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative