13-14 cm. Male is olive green above with a black mask extending over the ear coverts. Upper rim of mask, neck and nape grey. Underside yellow. <NThe female is similar but lacks face mask.
Call a loud "chiw" vocalization 5 and a fine "chip". Willis pointed out that there are two types of day songs | Type 1 consists of a fast sequence of descending "chi"-notes, up to 14 notes in total duration up to 2.1 s , listen to vocalization 2 . Type 2 is more melodic and is similar to song of /Cyanocompsa brissonii , duration 1.8 s, listen to vocalizations 1 and 3 ^119 . The dawnsongs are more variable than the type 2 day songs. Two examples are heard on vocalizations 4 and 6.
Forages close to the ground in dense cover, usually in pairs. Males might sing from a more or less exposed perch. Rarely part of a mixed flock.
Nest is a deep cup of grasses, lined with finer material.
Common. Frequents moist scrubby meadows, marshland borders, seasonally flooded areas, scrubby forest edges, clearings with dense undergrowth, gallery brush. May have increased due to deforestation.
Throughout, up to 1000 meters
The /Geothlypis aequinoctialis complex is actually a group of four distinct allospecies. Geothlypis aequinoctialis northern South America to northern Amazonia , /Geothlypis velata central South America to central Argentina , /Geothlypis auricularis Pacific slope of Ecuador and Peru , and /Geothlypis peruviana upper Maranon valley of northwestern Peru ^154 . The birds in Southeast Brazil belonging to the /velata group differ from the birds of the /aequinoctialis group by having more grey on top around the mask extending to the sides of the head and nape and by being smaller.
13825 Iguape, 10<10>22<10>93, cloudy, 26<91>C, swamp forest: 220 Iguape, 10<10>23<10>93, cloudy, 25<91>C. With /Saltator similis .: 10195 Song. Serra do Cipo, 11<10>15<10>98. Sunny, 20<91>C. Open scrub.: 13767 Three songs - Dawn song. Picinguaba, east of Ubatuba, 10<10>15<10>99. Sunny, 27<91>C. Forest border. Rest of the songs - December 21, 2004, dawn song, Nova Friburgo, Estado RJ, open scrub, 23<91>C, sunny.: 13160 Call. Rio Escuro, near Ubatuba, 10<10>13<10>99. Sunny, 27<91>C. Forest border.: 6423 Dawn song, Bertioga, S<C4>o Paulo, November 4, 1995, rainy, 20<91>C, scrub forest, with /Elaenia flavogaster .:
11650 > Male: 1051 > Female:
Character status: partial decoder; angle-bracket byte markers are preserved
Recovered structure; field assignment may be heuristic
Structured account sections
Description
13-14 cm. Male is olive green above with a black mask extending over the ear coverts. Upper rim of mask, neck and nape grey. Underside yellow. <NThe female is similar but lacks face mask.
Voice
Call a loud "chiw" vocalization 5 and a fine "chip". Willis pointed out that there are two types of day songs | Type 1 consists of a fast sequence of descending "chi"-notes, up to 14 notes in total duration up to 2.1 s , listen to vocalization 2 . Type 2 is more melodic and is similar to song of /Cyanocompsa brissonii , duration 1.8 s, listen to vocalizations 1 and 3 ^119 . The dawnsongs are more variable than the type 2 day songs. Two examples are heard on vocalizations 4 and 6.
Behavior
Forages close to the ground in dense cover, usually in pairs. Males might sing from a more or less exposed perch. Rarely part of a mixed flock.
Breeding
Nest is a deep cup of grasses, lined with finer material.
Habitat and status
Common. Frequents moist scrubby meadows, marshland borders, seasonally flooded areas, scrubby forest edges, clearings with dense undergrowth, gallery brush. May have increased due to deforestation.
Distribution
Throughout, up to 1000 meters
Taxonomy notes
The /Geothlypis aequinoctialis complex is actually a group of four distinct allospecies. Geothlypis aequinoctialis northern South America to northern Amazonia , /Geothlypis velata central South America to central Argentina , /Geothlypis auricularis Pacific slope of Ecuador and Peru , and /Geothlypis peruviana upper Maranon valley of northwestern Peru ^154 . The birds in Southeast Brazil belonging to the /velata group differ from the birds of the /aequinoctialis group by having more grey on top around the mask extending to the sides of the head and nape and by being smaller.
Structure status: heuristic; decoded_account_text and segment JSON remain authoritative
Release-specific historical evidence — the three releases remain separate; none is canonical
Release history
This work was published as three separate releases: the Disc 3 release first, the Disc 2 release later, and the Disc 1 release in 2011. Differences between them are historical release differences and are never merged.
Disc 3in this release's bird list(aux_nonzero;local_checklist_byte45_flag_1)
Disc 2in this release's bird list(aux_nonzero;local_checklist_byte45_flag_1)
Disc 1 (2011)in this release's bird list(aux_nonzero;local_checklist_byte45_flag_1)
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: taxonomy_notes. The complete earlier text is shown beneath each truncated section.
Description Disc 1 (2011)
13-14 cm. Male is olive green above with a black mask extending over the ear coverts. Upper rim of mask, neck and nape grey. Underside yellow. <nThe female is similar but lacks face mask.
Voice Disc 1 (2011)
Call a loud "chiw" vocalization 5 and a fine "chip". Willis pointed out that there are two types of day songs | Type 1 consists of a fast sequence of descending "chi"-notes, up to 14 notes in total duration up to 2.1 s , listen to vocalization 2 . Type 2 is more melodic and is similar to song of /Cyanocompsa brissonii , duration 1.8 s, listen to vocalizations 1 and 3 ^119 . The dawnsongs are more variable than the type 2 day songs. Two examples are heard on vocalizations 4 and 6.
Behavior Disc 1 (2011)
Forages close to the ground in dense cover, usually in pairs. Males might sing from a more or less exposed perch. Rarely part of a mixed flock.
Breeding Disc 1 (2011)
Nest is a deep cup of grasses, lined with finer material.
Habitat and status Disc 1 (2011)
Common. Frequents moist scrubby meadows, marshland borders, seasonally flooded areas, scrubby forest edges, clearings with dense undergrowth, gallery brush. May have increased due to deforestation.
Distribution Disc 1 (2011)
Throughout, up to 1000 meters
Taxonomy notes Disc 1 (2011)
The /Geothlypis aequinoctialis complex is actually a group of four distinct allospecies. Geothlypis aequinoctialis northern South America to northern Amazonia , /Geothlypis velata central South America to central Argentina , /Geothlypis auricularis Pacific slope of Ecuador and Peru , and /Geothlypis peruviana upper Maranon valley of northwestern Peru ^154 . The birds in Southeast Brazil belonging to the /velata group differ from the birds of the /aequinoctialis group by having more grey on top a
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 release (earliest) (80 bytes lost in 2011)
The /Geothlypis aequinoctialis complex is actually a group of four distinct allospecies. Geothlypis aequinoctialis northern South America to northern Amazonia , /Geothlypis velata central South America to central Argentina , /Geothlypis auricularis Pacific slope of Ecuador and Peru , and /Geothlypis peruviana upper Maranon valley of northwestern Peru ^154 . The birds in Southeast Brazil belonging to the /velata group differ from the birds of the /aequinoctialis group by having more grey on top around the mask extending to the sides of the head and nape and by being smaller.
Shown for comparison from the Disc 3 release (earliest); it does not repair or replace the Disc 1 (2011) historical text above.
13767 Three songs - Dawn song. Picinguaba, east of Ubatuba, 10<10>15<10>99. Sunny, 27<91>C. Forest border. Rest of the songs - December 21, 2004, dawn song, Nova Friburgo, Estado RJ, open scrub, 23<91>C, sunny.
