Bobolink
dolichonyx oryzivorus
Icteridae,Dolichonychinae · Bobolink
- Disc 2 · 2001 listed
- Disc 3 · 2006 listed
- Disc 1 · 2011 listed
The account
Description
17-18 cm. Conical bill flesh-colored or yellow. The Non-breeding male and female are buffy brown above with darker streaks. Head striped dark gray and buff. Underparts yellowish-buff, streaked dark brown on the flanks.
Juveniles have a darker head.
Males in worn plumage are mostly black with a straw-colored nuchal collar, white scapulars and rump. In fresh plumage this pattern is largely obscured by the buffy tips of the feathers which wear off during migration to the breeding areas. Freshly molted males have therefore a dark brown head and underside, the underside with narrow dark buffy bands. Neck and upper side lighter beige brown. Wings light brownish with light buffy wing coverts, and a beige wing band.
-
Adult male Disc 3 · 2006 -
Adult female Disc 3 · 2006 -
Immature Disc 3 · 2006
Each plate is labelled with the disc's own caption.
The account, continued
Voice
Calls a loud 'chack' and a 'ree-yew', repeated (Vocalization # 1). Vocalization # 2 features the "beta-song" (43 s, probably not delivered in Brazil) (167), which starts with a repeated 'pete pete' and continues with similar warbled notes that conclude also the longer (7.0 s) alpha-song.
Behavior
Forages in grassy areas on the ground in small and large flocks.
Breeding
North America in May-July.
Habitat and status
An irregular transient in rice fields, marshes, tall grass meadows.
Distribution
Extralimital in Mato Grosso do Sul. There are no records from Estado São Paulo, but it might occur as a straggler, because records exist from Estado Rio de Janeiro from Marambaia, Cabo Frio (121). To 1500 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
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Calls, Puerto Maldonado, Peru. LNS 13304. Recorded by T. Parker, III. At the end flight call.
-
Calls, Newfield, Tomkins County, New York, LNS 77227. Recorded by C. Marantz.
Recording files on the disc
- 969.mp3 Calls, Puerto Maldonado, Peru. LNS 13304. Recorded by T. Parker, III. At the end flight call.
- 4445.mp3 Calls, Newfield, Tomkins County, New York, LNS 77227. Recorded by C. Marantz.
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- Disc 3 · 2006
aux_nonzero- Disc 1 · 2011
aux_nonzero
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
17-18 cm. Conical bill flesh-colored or yellow. The Non-breeding male and female are buffy brown above with darker streaks. Head striped dark gray and buff. Underparts yellowish-buff, streaked dark brown on the flanks.
Juveniles have a darker head.
Males in worn plumage are mostly black with a straw-colored nuchal collar, white scapulars and rump. In fresh plumage this pattern is largely obscured by the buffy tips of the feathers which wear off during migration to the breeding areas. Freshly molted male
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 (209 bytes lost in 2011)
17-18 cm. Conical bill flesh-colored or yellow. The Non-breeding male and female are buffy brown above with darker streaks. Head striped dark gray and buff. Underparts yellowish-buff, streaked dark brown on the flanks.
Juveniles have a darker head.
Males in worn plumage are mostly black with a straw-colored nuchal collar, white scapulars and rump. In fresh plumage this pattern is largely obscured by the buffy tips of the feathers which wear off during migration to the breeding areas. Freshly molted males have therefore a dark brown head and underside, the underside with narrow dark buffy bands. Neck and upper side lighter beige brown. Wings light brownish with light buffy wing coverts, and a beige wing band.
Shown for comparison from the Disc 3 · 2006; it does not repair or replace the Disc 1 · 2011 historical text above.
Voice Disc 1 · 2011
Calls a loud 'chack' and a 'ree-yew', repeated (Vocalization # 1). Vocalization # 2 features the "beta-song" (43 s, probably not delivered in Brazil) (167), which starts with a repeated 'pete pete' and continues with similar warbled notes that conclude also the longer (7.0 s) alpha-song.
Behavior Disc 1 · 2011
Forages in grassy areas on the ground in small and large flocks.
Breeding Disc 1 · 2011
North America in May-July.
Habitat and status Disc 1 · 2011
An irregular transient in rice fields, marshes, tall grass meadows.
Distribution Disc 1 · 2011
Extralimital in Mato Grosso do Sul. There are no records from Estado São Paulo, but it might occur as a straggler, because records exist from Estado Rio de Janeiro from Marambaia, Cabo Frio (121). To 1500 meters
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 | dolichonyx oryzivorus | Bobolink | Icteridae,Dolichonychinae |
| CLEMENTS | dolichonyx oryzivorus | Bobolink | Icteridae,Dolichonychinae |
| AOU_HM | dolichonyx oryzivorus | Bobolink | Icteridae,Dolichonychinae |
Source details
- Identifier on this site
- seb_species_0457
- Account identifier
- seb_account_0457
- Account number on the disc
- 457
- Source edition
- CD03 / 2006 package
- Original taxonomy scheme
- WORLD
- Structure status
- heuristic; decoded_account_text and segment JSON remain authoritative