Shiny Cowbird
molothrus bonariensis
Icteridae,Icterinae · Troupials
- Disc 2 · 2001 listed
- Disc 3 · 2006 listed
- Disc 1 · 2011 listed
The account
Description
18-21.5 cm. Male glossy purplish black, the wings with a greenish gloss.
The female is dark gray above, lighter below with a light postocular stripe.
The juvenile is like the female, but streaked underneath. Wings and upperparts with pale fringes. The juvenile male is darker, and some are almost blackish gray.
-
Male Disc 3 · 2006 -
Female Disc 3 · 2006 -
Juvenile Disc 3 · 2006
Each plate is labelled with the disc's own caption.
Where it was recorded
The discs' own checklists select Shiny Cowbird at 20 localities.
- Angra dos Reis ANRB
- Boraceia BOSB
- Fazenda Intervales FASB
- Ilha do Cardoso ILSB
- Ilha São Sebastião SSSB
- Itirapina ITSB
- Jureia-Peruibe JUSB position not recoverable
- Marica MRRB
- Morro do Diabo MOSB outside the map
- Parati PARB
- Pariquera-Abaixo PESB
- PE Carlos Botelho PCSB
- PE Jacupiranga PJSB
- Reserva Ecológica Guapiacú RERB
- Rio de Janeiro RIRB
- Santa Barbara do Rio Pardo SNSB
- Serra da Cantareira SRSB
- 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 fast 'tit-ti-it'. Song gurgling followed by high notes: 4 low pitched 'gloc' followed by high whistles 'si- im' {2), see vocalization # 1. Song in flight a fast sequence of high whistles (119).
Behavior
Foraging in pairs or small groups on the ground, sometimes associated with cattle. On sleeping roosts up to several hundred.
Breeding
An egg parasite of many species, e. g. of Zonotrichia capensis.
Habitat and status
Common in open agricultural country with scattered trees and bushes, outskirts of towns. Expands into deforested regions.
Distribution
Throughout. To 2100 meters
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
-
Calls, song. Venezuela, LNS 58137. Recorded by W. Gunn.
Recording files on the disc
- 2958.mp3 Calls, song. Venezuela, LNS 58137. Recorded by W. Gunn.
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 | molothrus bonariensis | Shiny Cowbird | Icteridae,Icterinae |
| CLEMENTS | molothrus bonariensis | Shiny Cowbird | Icteridae,Icterinae |
| AOU_HM | molothrus bonariensis | Shiny Cowbird | Icteridae,Icterinae |
Source details
- Identifier on this site
- seb_species_0463
- Account identifier
- seb_account_0463
- Account number on the disc
- 463
- Source edition
- CD03 / 2006 package
- Original taxonomy scheme
- WORLD
- Structure status
- heuristic; decoded_account_text and segment JSON remain authoritative