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dc.contributor.author
Jordan, Emilio Ariel  
dc.contributor.author
Areta, Juan Ignacio  
dc.date.available
2021-10-21T15:21:40Z  
dc.date.issued
2020-06  
dc.identifier.citation
Jordan, Emilio Ariel; Areta, Juan Ignacio; Bisonic mechanical wing songs and complex kinematics in aerial displays of the subtropical doradito (Pseudocolopteryx acutipennis); Oxford University Press; Integrative And Comparative Biology; 60; 5; 6-2020; 1173-1187  
dc.identifier.issn
1540-7063  
dc.identifier.uri
http://hdl.handle.net/11336/144628  
dc.description.abstract
Loud mechanical sounds with a communication role are called sonations. Male Subtropical Doraditos (Pseudocolopteryx acutipennis) exhibit five conspicuously modified primaries suspected of sonating. Here we (1) describe feather modifications, (2) describe three different territorial/aggressive contexts for these sounds: one-perch aerial displays (1PADs), two-PADs, and Chukrut pursuits, (3) investigate the kinematics of the most common display (1PADs) and the physical mechanisms of sonation using synchronized high-speed video and audio, and (4) assess the roles of modified wing feathers in all contexts by experimental manipulation in four individuals. Primaries p3–p7 were modified in adult males but not in females: p3 was pointed with a reduced distal third to the outer vane; p4 and p5 were slim and falciform with pointed tips curved outwards; p6 was broad, massive, and subtly S-shaped, with a spatulate tip; and p7 was large with the distal third of the outer vane abruptly reduced, and the inner vane with a shallow concave sub-apical emargination. One-PADs consisted of perched short nasal introductory syllables accelerating until the bird performed a super-rapid circular flight of 15 cm in diameter from and to the same branch, during which two syringeal syllables and three mechanical syllables were given (chik... chik.... chik-chik frrrottt). The syllables were produced during rapid downstrokes by fluttering feathers and were bisonic, being conformed by two simultaneous main tonal, flat, narrow band sounds: a low-pitched note (f0 1 kHz) and a high-pitched note (f0 3.7 kHz). Primary p7 is the necessary and sufficient sound source of the low-pitched note (removal of p7 caused the sound to disappear) and p3 is the sound source of the high-pitched note, being necessary but perhaps not sufficient (removal of p3 caused the sound to disappear); the other modified feathers seem involved in different roles related to either producing the sonation (p4 and p5 interacting with p3) or allowing it (p6 raising dorsally letting p7 flutter freely; removal of p6 did not affect sound production). The specialized shape of p6 might be compromised to allow sonation of p7 without losing flight functionality. Sonations in Subtropical Doraditos occupy the position of the vocal flourish in the songs of other Pseudocolopteryx suggesting the evolutionary replacement of vocal by mechanical sounds. We propose that wing songs in flying birds may be constrained to occur in temporally broken patterns due to intrinsic features of flapped flight and structurally constrained by the demands of creating an airfoil.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Oxford University Press  
dc.rights
info:eu-repo/semantics/restrictedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Sonations  
dc.subject
Modified wing feathers  
dc.subject
Aeroelastic flutter  
dc.subject
Source-filter model  
dc.subject.classification
Zoología, Ornitología, Entomología, Etología  
dc.subject.classification
Ciencias Biológicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Bisonic mechanical wing songs and complex kinematics in aerial displays of the subtropical doradito (Pseudocolopteryx acutipennis)  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2021-09-07T13:49:40Z  
dc.identifier.eissn
1557-7023  
dc.journal.volume
60  
dc.journal.number
5  
dc.journal.pagination
1173-1187  
dc.journal.pais
Reino Unido  
dc.journal.ciudad
Oxford  
dc.description.fil
Fil: Jordan, Emilio Ariel. Provincia de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Universidad Autónoma de Entre Ríos. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Centro de Investigaciones Científicas y Transferencia de Tecnología a la Producción; Argentina  
dc.description.fil
Fil: Areta, Juan Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Bio y Geociencias del NOA. Universidad Nacional de Salta. Facultad de Ciencias Naturales. Museo de Ciencias Naturales. Instituto de Bio y Geociencias del NOA; Argentina  
dc.journal.title
Integrative And Comparative Biology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1093/icb/icaa062  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/icb/article-abstract/60/5/1173/5851430