Tropical Mockingbird

mimus gilvus

Mimidae · Mockingbirds

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

The account

Description

24 cm. Pale gray on top, white superciliary above a grayish ear stripe. Feathers of wings black with white edges and two white bars. Tail feathers black with white tips, below whitish. Iris yellow in old individuals.

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

Where it was recorded

The discs' own checklists select Tropical Mockingbird at 2 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.

Marica MRRB
Rio de Janeiro RIRB

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.

Behavior

Forages in trees and on the ground.

Habitat and status

Status in Estado Rio not known. Occurs in open country with trees and bushes, often close to houses, parks, gardens, coastal brushland.

Distribution

Coastal areas of Northern Estado Rio de Janeiro. Pinto lists Lagoa Feia and Restinga de Marambaia, Estado Rio de Janeiro (⁴⁰).

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, Venezuela, LNS 68985, recorded by W. Gunn.
Calls, Venezuela, LNS 68986, recorded by W. Gunn.

Recording files on the disc

822.mp3 Calls, Venezuela, LNS 68985, recorded by W. Gunn.
154.mp3 Calls, Venezuela, LNS 68986, 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	mimus gilvus	Tropical Mockingbird	Mimidae
CLEMENTS	mimus gilvus	Tropical Mockingbird	Mimidae
AOU_HM	mimus gilvus	Tropical Mockingbird	Mimidae

Source details

Identifier on this site: seb_species_0321
Account identifier: seb_account_0321
Account number on the disc: 321
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative