Grayish Mourner

rhytipterna simplex

Tyrannidae,Tyranninae · Tyrannine Flycatchers

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

The account

Description

21 cm. A chunky inconspicuous flycatcher of the rain forest canopy. Iris red. Bill black, Uniformly smoky gray above, the crown, wings and tail darker. Below somewhat lighter, the belly with light yellow wash.

Females and immature birds (?) show fulvous edging on wing and tail feathers (Ridgely).

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

Where it was recorded

The discs' own checklists select Grayish Mourner at 8 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.

Fazenda Intervales FASB
Jureia-Peruibe JUSB position not recoverable
Parati PARB
Reserva Ecológica Guapiacú RERB
Rio de Janeiro RIRB
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.

Voice

The common call is a loud and repeated whistle: 'tatatatatota-CHEW' with emphasis on the last syllable or a 'tetetetetePIU' increasing in pitch and loudness. Other calls are a 'tchewe tchewe wewewewewi', increasing in pitch and loudness, and similar calls.

Behavior

Perches inconspicuously in the middle and upper canopy of large trees. An outward-hover-gleaner and fruit eater. Sits on the same branch often for a long time without moving.

Habitat and status

Rare in primary and mature secondary humid forest and sandy woodland. Does not seem to favor forest edge.

Distribution

Possibly throughout but not frequently encountered: In Estado São Paulo at Boraceia, Rio Guaratuba (25 km east-southeast of São Paulo city)(⁷⁶), Picinguaba, October 1999, Corisco Trail (Willis, Mueller F., Remold), Fazenda Intervales, Jureia (Pedro Develey). Willis and Oniki found them singing in sandy woodlands at Iguape, Bertioga and in lowland forest 25 km. northeast of Ubatuba. In Estado Rio de Janeiro near Cantagalo (⁴⁰). Up to 800 meters (⁴⁴). Forrester lists it as scarce for Serra do Mar, Serra dos Orgãos and Rio de Janeiro. Common and frequently calling in October at Rio Doçe State Park, Minas Gerais, (Remold).

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. Cornell Cat#22055. Nova Lombardia Reserve, Espirito Santo, 10/26/80. With Saltator similis, Hemitriccus orbitatus, Anabazenops fuscus, Columba plumbea, Procnias nudicollis, Carpornis cucullatus, Myiodynastes maculatus. Recording by T. A. Parker, III.
Dawn song. Cornell Cat#42819. Manaus, Amazonas, 8/27/88, Recording by B. Bierregaard / A. Whittaker.
Call. Cornell Cat#22058. Nova Lombardia Reserve, Espirito Santo, 10/26/80. Recording by T. A. Parker, III.
Song or Call. Rio Doçe, 11/3/00. Cloudy, 25°C. Primary forest. With Thamnophilus palliatus and double drum of Campephilus robustus.
Song, call. Rio Doçe, 11/4/00. Cloudy, 22°C, some rain. Primary forest. With unknown sp., Crypturellus noctivagus, Ramphastos dicolorus.

Recording files on the disc

13246.wav Call. Cornell Cat#22055. Nova Lombardia Reserve, Espirito Santo, 10/26/80. With Saltator similis, Hemitriccus orbitatus, Anabazenops fuscus, Columba plumbea, Procnias nudicollis, Carpornis cucullatus, Myiodynastes maculatus. Recording by T. A. Parker, III.
14649.wav Dawn song. Cornell Cat#42819. Manaus, Amazonas, 8/27/88, Recording by B. Bierregaard / A. Whittaker.
2767.wav Call. Cornell Cat#22058. Nova Lombardia Reserve, Espirito Santo, 10/26/80. Recording by T. A. Parker, III.
541.wav Song or Call. Rio Doçe, 11/3/00. Cloudy, 25°C. Primary forest. With Thamnophilus palliatus and double drum of Campephilus robustus.
2162.mp3 Song, call. Rio Doçe, 11/4/00. Cloudy, 22°C, some rain. Primary forest. With unknown sp., Crypturellus noctivagus, Ramphastos dicolorus.

More images

Corisco Trail, Picinguaba, e. of Ubatuba. Biome of Rhytipterna simplex. 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.

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: distribution. The complete earlier text is shown beneath each truncated section.

Description Disc 1 · 2011

Females and immature birds (?) show fulvous edging on wing and tail feathers (Ridgely).

Voice Disc 1 · 2011

Behavior Disc 1 · 2011

Perches inconspicuously in the middle and upper canopy of large trees. An outward-hover-gleaner and fruit eater. Sits on the same branch often for a long time without moving.

Habitat and status Disc 1 · 2011