Blackpoll Warbler

dendroica striata

Parulidae · Wood-Warblers

Disc 2 · 2001 not listed
Disc 3 · 2006 listed
Disc 1 · 2011 listed

The account

Description

13 cm. In non-breeding plumage is greenish gray above with black streaks. Wingbars white. Underside white with a greenish-yellow hue and grayish streaks, the center of belly and crissum white.

Male in breeding plumage has a black crown and white cheeks. Upper parts olive with black streaking. Underside white with a black malar streak and streaked chest sides and flanks.

Adult, nonbreeding plumage Disc 3 · 2006
Male breeding plumage Disc 3 · 2006

Each plate is labelled with the disc's own caption.

Where it was recorded

The discs' own checklists select Blackpoll Warbler at 1 locality.

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.

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.

Voice

Call a high pitched 'zip'. Song a very high frequency 'si si si si si si si...'.

Behavior

Forages high in crowns of trees, rarely close to the ground.

Habitat and status

A rare and unobtrusive winter visitor in open forest and borders, gardens with trees.

Distribution

Unknown, probably throughout. Rio de Janeiro (¹²¹). In Estado São Paulo at Campinas, Ubatuba, Ilha Comprida, Cananeia (⁷⁶).

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, Cambridge, MA, USA, May 1998.

Recording files on the disc

654.mp3 Calls, Cambridge, MA, USA, May 1998.

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	dendroica striata	Blackpoll Warbler	Parulidae
CLEMENTS	dendroica striata	Blackpoll Warbler	Parulidae
AOU_HM	dendroica striata	Blackpoll Warbler	Parulidae

Source details

Identifier on this site: seb_species_0357
Account identifier: seb_account_0357
Account number on the disc: 357
Source edition: CD03 / 2006 package
Original taxonomy scheme: WORLD
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative