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Pinyon jays use transitive inference to predict social dominance


Living in large, stable social groups is often considered to favour the evolution of enhanced cognitive abilities, such as recognizing group members, tracking their social status and inferring relationships among them1,2,3,4. An individual's place in the social order can be learned through direct interactions with others, but conflicts can be time-consuming and even injurious. Because the number of possible pairwise interactions increases rapidly with group size, members of large social groups will benefit if they can make judgments about relationships on the basis of indirect evidence5. Transitive reasoning should therefore be particularly important for social individuals, allowing assessment of relationships from observations of interactions among others. Although a variety of studies have suggested that transitive inference may be used in social settings6,7,8,9,10, the phenomenon has not been demonstrated under controlled conditions in animals. Here we show that highly social pinyon jays (Gymnorhinus cyanocephalus) draw sophisticated inferences about their own dominance status relative to that of strangers that they have observed interacting with known individuals. These results directly demonstrate that animals use transitive inference in social settings and imply that such cognitive capabilities are widespread among social species.

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Figure 1: Dominance encounters were conducted in a transparent acrylic chamber (100 × 40 × 40 cm) separated into three compartments by sliding opaque and transparent dividers.
Figure 2: Mean dominance and subordinance indices for each of the first 3 min of the first test session.
Figure 3: Subordinance index for observers during the first 5-min test encounter with the demonstrator.


  1. Jolly, A. Lemur social behavior and primate intelligence. Science 153, 501–506 (1966)

    Article  ADS  CAS  Google Scholar 

  2. Humphrey, N. K. in Growing Points in Ethology (eds Bateson, P. & Hinde, R. A.) 303–317 (Cambridge Univ. Press, Cambridge, 1976)

    Google Scholar 

  3. Kummer, H., Daston, L., Gigerenzer, G. & Silk, J. in Human by Nature: Between Biology and the Social Sciences (ed. Weingart, P. et al.) 157–179 (L. Erlbaum, Hillsdale, 1997)

    Google Scholar 

  4. de Waal, F. B. M. & Tyack, P. L. Animal Social Complexity (Harvard Univ. Press, Cambridge, 2003)

    Book  Google Scholar 

  5. Seyfarth, R. M. & Cheney, D. L. in Animal Social Complexity (eds de Waal, F. B. M. & Tyack, P. L.) 207–229 (Harvard Univ. Press, Cambridge, 2003)

    Google Scholar 

  6. Cheney, D. L. & Seyfarth, R. M. Vocal recognition in free-ranging vervet monkeys. Anim. Behav. 28, 362–367 (1980)

    Article  Google Scholar 

  7. Holekamp, K. E. et al. Vocal recognition in the spotted hyena and its possible implications regarding the evolution of intelligence. Anim. Behav. 58, 383–395 (1999)

    Article  CAS  Google Scholar 

  8. Silk, J. B., Seyfarth, R. M. & Cheney, D. L. The structure of social relationships among female baboons. Behaviour 136, 679–703 (1999)

    Article  Google Scholar 

  9. Peake, T. M., Terry, A. M. R., McGregor, P. K. & Dabelsteen, T. Do great tits assess rivals by combining direct experience with information gathered by eavesdropping? Proc. R. Soc. Lond. B 269, 1925–1929 (2002)

    Article  CAS  Google Scholar 

  10. Bergman, T. J., Beehner, J. C., Cheney, D. L. & Seyfarth, R. M. Hierarchical classification by rank and kinship in baboons. Science 302, 1234–1236 (2003)

    Article  ADS  CAS  Google Scholar 

  11. Balda, R. P. in The Birds of North America No. 605 (eds Poole, A. & Gill, F.) 1–32 (Birds of North America Inc., Philadelphia, 2002)

    Google Scholar 

  12. Marzluff, J. M. & Balda, R. P. The Pinyon Jay (T. & A.D. Poyser, London, 1992)

    Google Scholar 

  13. Bond, A. B., Kamil, A. C. & Balda, R. P. Social complexity and transitive inference in corvids. Anim. Behav. 65, 479–487 (2003)

    Article  Google Scholar 

  14. Balda, R. P., Kamil, A. C. & Bednekoff, P. A. in Current Ornithology 13 (eds Nolan, V. & Ketterson, E. D.) 33–66 (Plenum, New York, 1996)

    Book  Google Scholar 

  15. Chase, I., Bartolomeo, C. & Dugatkin, L. A. Aggressive interactions and inter-contest interval: how long do winners keep winning? Anim. Behav. 48, 393–400 (1994)

    Article  Google Scholar 

  16. Hogue, M.-E., Beaugrand, J. P. & Laguë, P. C. Coherent use of information by hens observing their former dominant defeating or being defeated by a stranger. Behav. Processes 38, 241–252 (1996)

    Article  CAS  Google Scholar 

  17. Oliveira, R. F., McGregor, P. K. & Latruffe, C. Know thine enemy: fighting fish gather information from observing conspecific interactions. Proc. R. Soc. Lond. B 265, 1045–1049 (1998)

    Article  Google Scholar 

  18. SAS v.8 (SAS Institute Inc., Cary, North Carolina, 2000).

  19. Rohwer, S. The evolution of reliable and unreliable badges of fighting ability. Am. Zool. 22, 531–546 (1982)

    Article  Google Scholar 

  20. Huntingford, F. A. & Turner, A. K. Animal Conflict (Chapman and Hall, London, 1987)

    Book  Google Scholar 

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We thank N. Howe and E. A. Simpson for assistance in data collection and B. Luke Stafford for help in designing Fig. 1. Supported by University of Nebraska Research Enhancement Funds and an NSF grant to Northern Arizona University.

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Correspondence to Alan B. Bond or Alan C. Kamil.

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Paz-y-Miño C, G., Bond, A., Kamil, A. et al. Pinyon jays use transitive inference to predict social dominance. Nature 430, 778–781 (2004).

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