Anticipatory manoeuvres in bird flight

Vo, Hong D., Schiffner, Ingo and Srinivasan, Mandyam V. (2016) Anticipatory manoeuvres in bird flight. Scientific Reports, 6 27591: 1-8. doi:10.1038/srep27591

Author Vo, Hong D.
Schiffner, Ingo
Srinivasan, Mandyam V.
Title Anticipatory manoeuvres in bird flight
Journal name Scientific Reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2016-06-08
Year available 2016
Sub-type Article (original research)
DOI 10.1038/srep27591
Open Access Status DOI
Volume 6
Issue 27591
Start page 1
End page 8
Total pages 8
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Collection year 2017
Language eng
Abstract It is essential for birds to be agile and aware of their immediate environment, especially when flying through dense foliage. To investigate the type of visual signals and strategies used by birds while negotiating cluttered environments, we presented budgerigars with vertically oriented apertures of different widths. We find that, when flying through narrow apertures, birds execute their maneuvers in an anticipatory fashion, with wing closures, if necessary, occurring well in advance of the aperture. When passing through an aperture that is narrower than the wingspan, the birds close their wings at a specific, constant distance before the aperture, which is independent of aperture width. In these cases, the birds also fly significantly higher, possibly pre-compensating for the drop in altitude. The speed of approach is largely constant, and independent of the width of the aperture. The constancy of the approach speed suggests a simple means by which optic flow can be used to gauge the distance and width of the aperture, and guide wing closure.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
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Queensland Brain Institute Publications
School of Information Technology and Electrical Engineering Publications
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