Rough-legged Tyrannulet

phyllomyias burmeisteri

Tyrannidae,Elaeninae · Tyrannulets

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

The account

Description

11.5 cm. A stocky greenish bird with a rather short tail (somewhat too long in the color sketches) and long wings foraging in the canopy. Bill is heavy and short, the mandible with an orange or pinkish base. Above dull olive-green, some individuals paler the head with a broad white superciliary stripe terminating over the eye and dusky lores. Wings are blackish-grey with two distinct but not very obvious dull yellowish-white wingbars. The throat and belly are dirty lemon-yellow, the chest sometimes with olive flammulation. Tail black with white sides.

Some individuals have a lighter colored front of head and loral area, and these may be young individuals (pic #2). Some individuals appear very light and washed out in November.

(See also the picture of this species in Clay (⁷⁵) although in this picture the tail is much too long)

adult Disc 3 · 2006

Where it was recorded

The discs' own checklists select Rough-legged Tyrannulet at 10 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
PE Jacupiranga PJSB
Reserva Ecológica Guapiacú RERB
Rio de Janeiro RIRB
Serra Bocaina SESB
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 call is diagnostic. A series of high 'psiiit' notes with the quality of the calls of Myiozetetes similis usually 10-15, 0.5-1 sec apart, 'psiit.... ..psiit...... psiit... psiit.. psiit... psiit.. psiit.. ..psiit.. psiit.. psiit....'.

Behavior

Forages usually high above the ground. Presumably an upward hover-gleaner and frugivorous like Phyllomyias fasciatus (⁷⁴). I have seen this species perch-gleaning moving rapidly through the canopy.

Breeding

Nest is an open cup (¹⁰⁸, ¹⁰⁹).

Habitat and status

Uncommon in tall primary or secondary forest, parks etc.

Distribution

Throughout, from sea level to about 1300 meters (⁴⁴). It is not clear whether the specimens seen in spring in Estado Rio de Janeiro and further north are migrants from the south. Pinto lists bird from Iporanga, Bananal, and Caraguatatuba (Estado São Paulo). I encountered this species in PE Jacupiranga, Ubatuba (Estado São Paulo) and Itatiaia (Estado Rio de Janeiro). E. O. Willis (pers. comm.) observed one as far inland as at Serra das Rosas (near Franca).

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 or song, 1x repeated. Rio Escuro, near Ubatuba, 10/13/99. Sunny, 27°C. Forest border. With Chiroxiphia caudata, Ramphocelus bresilius.
Calls, song. Cornell Cat#30163. Itatiaia National Park, Rio de Janeiro, 11/12/82. With Tijuca atra, Drymophila rubricollis, Chamaeza ruficauda, Thamnophilus caerulescens. Recording by T. A. Parker, III.

Recording files on the disc

3067.wav Call or song, 1x repeated. Rio Escuro, near Ubatuba, 10/13/99. Sunny, 27°C. Forest border. With Chiroxiphia caudata, Ramphocelus bresilius.
10120.wav Calls, song. Cornell Cat#30163. Itatiaia National Park, Rio de Janeiro, 11/12/82. With Tijuca atra, Drymophila rubricollis, Chamaeza ruficauda, Thamnophilus caerulescens . Recording by T. A. Parker, III.

More images

This individual has whitish lores and front and might be an immature, Serra Mantiqueira, 10/22/93. Disc 3 · 2006
Secondary forest. Itatiaia, below the Hotel Do Ype. Biome of Phyllomyias burmeisteri. 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: description. The complete earlier text is shown beneath each truncated section.

Description Disc 1 · 2011

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 (332 bytes lost in 2011)