Screaming Cowbird
molothrus rufoaxillaris
Icteridae,Icterinae · Troupials
- Disc 2 · 2001 not listed
- Disc 3 · 2006 listed
- Disc 1 · 2011 listed
The account
Description
19 cm. Sexes alike. Adult is black with a greenish-blue sheen and no violet gloss. The bill is shorter than that of Molothrus bonariensis and more conical.
Juveniles are similar to Molothrus badius.
-
Male Disc 3 · 2006 -
Female Disc 3 · 2006
Each plate is labelled with the disc's own caption.
Where it was recorded
The discs' own checklists select Screaming Cowbird at 1 locality.
- Serra dos Tucanos SDTC
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 'chic', 'chac'. Song a short loud assembly of notes:'tur-tchelim" (119).
Behavior
On the ground in open areas, behavior similar to that of Molothrus bonariensis, seems to gather in smaller flocks.
Habitat and status
Open pastures, agricultural areas, fields, scrubby areas, near towns.
Distribution
Extralimital. In Estado São Paulo found once at São Jose do Barreiro (119). To 1000 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.
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 — not 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 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 rufoaxillaris | Screaming Cowbird | Icteridae,Icterinae |
| CLEMENTS | molothrus rufoaxillaris | Screaming Cowbird | Icteridae,Icterinae |
| AOU_HM | molothrus rufoaxillaris | Screaming Cowbird | Icteridae,Icterinae |
Source details
- Identifier on this site
- seb_species_0462
- Account identifier
- seb_account_0462
- Account number on the disc
- 462
- Source edition
- CD03 / 2006 package
- Original taxonomy scheme
- WORLD
- Structure status
- heuristic; decoded_account_text and segment JSON remain authoritative