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Detection distance influencing escape behaviour in two parids (Parus major and P. caeruleus)
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology.
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2003 (English)In: Journal of Avian Biology, ISSN 0908-8857, E-ISSN 1600-048X, Vol. 34, no 3, 233-236 p.Article in journal (Refereed) Published
Abstract [en]

When birds are attacked by aerial predators they should benefit by adjusting their escape to the prevailing attack situation. One important factor likely to affect escape decisions of prey, to our knowledge not previously studied, is the distance at which the attacking predator is detected. We investigated if great tits Parus major and blue tits P. caeruleus alter their escape behaviour to two different detection distances (2.3 m and 1m) by simulating surprise attacks using a predator model. Both species used the information about detection distance when escaping by increasing the escape angle at the shorter detection distance. In addition, blue tits adjusted to the shorter detection distance by dodging sideways more frequently. Great tits escaped initially steeper and faster than blue tits, whereas blue tits increased escape angle and speed more than great tits along the measured distance after taking wing

Place, publisher, year, edition, pages
2003. Vol. 34, no 3, 233-236 p.
National Category
Zoology
Research subject
Zoology; Ethology
Identifiers
URN: urn:nbn:se:su:diva-29084DOI: 10.1034/j.1600-048X.2003.03097.xOAI: oai:DiVA.org:su-29084DiVA: diva2:229086
Available from: 2009-08-11 Created: 2009-08-11 Last updated: 2017-12-13Bibliographically approved

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