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  Can video playback provide social information for foraging blue tits?

Hamalainen, L., Rowland, H. M., Mappes, J., & Thorogood, R. (2017). Can video playback provide social information for foraging blue tits? PeerJ, 5, 21. doi:10.7717/peerj.3062.

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http://dx.doi.org/10.7717/peerj.3062 (Publisher version)
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 Creators:
Hamalainen, L., Author
Rowland, Hannah M.1, Author              
Mappes, J., Author
Thorogood, R., Author
Affiliations:
1Max Planck Research Group Predators and Prey, Dr. Hannah Rowland, MPI for Chemical Ecology, Max Planck Society, ou_2466691              

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 Abstract: Video playback is becoming a common method for manipulating social stimuli in experiments. Parid tits are one of the most commonly studied groups of wild birds. However, it is not yet clear if tits respond to video playback or how their behavioural responses should be measured. Behaviours may also differ depending on what they observe demonstrators encountering. Here we present blue tits (Cyanistes caeruleus) videos of demonstrators discovering palatable or aversive prey (injected with bitter-tasting Bitrex) from coloured feeding cups. First we quantify variation in demonstrators' responses to the prey items: aversive prey provoked high rates of beak wiping and head shaking. We then show that focal blue tits respond differently to the presence of a demonstrator on a video screen, depending on whether demonstrators discover palatable or aversive prey. Focal birds faced the video screen more during aversive prey presentations, and made more head turns. Regardless of prey type, focal birds also hopped more frequently during the presence of a demonstrator (compared to a control video of a different coloured feeding cup in an empty cage). Finally, we tested if demonstrators' behaviour affected focal birds' food preferences by giving individuals a choice to forage from the same cup as a demonstrator, or from the cup in the control video. We found that only half of the individuals made their choice in accordance to social information in the videos, i.e., their foraging choices were not different from random. Individuals that chose in accordance with a demonstrator, however, made their choice faster than individuals that chose an alternative cup. Together, our results suggest that video playback can provide social cues to blue tits, but individuals vary greatly in how they use this information in their foraging decisions.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Published in print
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 Identifiers: Other: ROW010
DOI: 10.7717/peerj.3062
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Title: PeerJ
Source Genre: Journal
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Publ. Info: San Francisco, USA : PeerJ Inc.
Pages: - Volume / Issue: 5 Sequence Number: - Start / End Page: 21 Identifier: ISSN: 2167-8359
CoNE: https://pure.mpg.de/cone/journals/resource/2167-8359