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Petr Veselý, Michal M. Němec, Michaela Syrová, Roman S. Fuchs Center of Cognitive Ethology

www.cke.cz. Predator recognition by red-backed shrikes – importance of predator colour, size and presence of key features. Petr Veselý, Michal M. Němec, Michaela Syrová, Roman S. Fuchs Center of Cognitive Ethology Department of Zoology Faculty of Science University of South Bohemia

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Petr Veselý, Michal M. Němec, Michaela Syrová, Roman S. Fuchs Center of Cognitive Ethology

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  1. www.cke.cz Predator recognition by red-backed shrikes – importance of predator colour, size and presence of key features Petr Veselý, Michal M. Němec, Michaela Syrová, Roman S. Fuchs Center of Cognitive Ethology Department of Zoology Faculty of Science University of South Bohemia České Budějovice Czech Republic

  2. www.cke.cz Background Classical studies Key features (releasers) Connected to reproduction Supernormal stimulus Lack 1943 Tinbergen 1951 Tinbergen 1953 Tinbergen 1948

  3. www.cke.cz Background Classical studies Key features (releasers) Connected to antipredatory behaviour Curio 1975 Lorenz 1940 Krätzig 1940

  4. www.cke.cz Background Our study Relevant stimulus Predator Recognition is essential Vigorous and unambiguous response Red-backed shrike (Lanius collurio)

  5. www.cke.cz Methods Dummy presented at the nest (one meter) actual peril Breeding stage – large chicks (10-12 days) large investment of parents Behavioural response Number of attacks

  6. www.cke.cz Methods – dummy material Stuffed dummy has limits in terms of feature manipulation Textile dummy is suitable textile plastic stuffed Němec et al. (in press) Animal Cognition

  7. www.cke.cz Shrikes vs. corvids Shrikes avoid attacking large corvids Němec and Fuchs (in press) Acta Ethologica

  8. www.cke.cz Importance of body size Shrikes avoid attacking very large jays Kopecká et al. (in prep.)

  9. www.cke.cz Shrikes’ responses to various predators? Shrikes respond differently to predators and pigeon Shrikes respond differently to sparrowhawk and kestrel Strnad et al. (2012) Ornis Fennica, 89, 206-215

  10. www.cke.cz Relative importance of raptor features and colouration Shrikes consider all dummies without raptor features harmless Unfamiliar colouration affects the raptor recognition Němec et al. (in prep.)

  11. www.cke.cz Summary 1. Shrikes are able to recognize particular predators, to assess the danger, they represent and to appropriately respond When confronted to novel form of a predator, they generalize according to specific features available for recognition Body size is a measure of danger in general, raptor features like beak, talons and conspicuous eyes are used to identify a raptor, and colour identifies particular species None of tested features universally fullfilled the key role in predator recognition 2. 3. 4.

  12. www.cke.cz Acknowledgements Financial support: Academy of Sciences (IAA601410803, 2008-2012) Czech Science Foundation(206/03/H034, 2004-2007; 206/08/H044, 2008-2011) Ministry of Education, Youth and Sports (MSM6007665801,2005-2010) Field research: Martin Strnad, Tereza Součková, Barbora Holečková, Anna Vlašánková (Falkenauerová), Dana Luhanová, Lenka Dokoupilová (Bendová), Kateřina Kopecká, Eliška Perlová, Tomáš Minařík, Irena Tichá, Josef Šalom, Miroslav Bažant, Barbora Kamišová, František Nuc, Nela Nováková …and thank You for your attention

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