| Affiliation: |
| AA( Sub-department of Animal Behavior, University of Cambridge, Madingley, Cambridge CB3 8AA, United Kingdom; Institute of Biological Anthropology, Oxford University, 58 Banbury Road, Oxford OX2 6QS, United Kingdom; and Department of Biological Sciences, Herrin Hall, Stanford University, Stanford, CA, 94305-5020), AB( Sub-department of Animal Behavior, University of Cambridge, Madingley, Cambridge CB3 8AA, United Kingdom; Institute of Biological Anthropology, Oxford University, 58 Banbury Road, Oxford OX2 6QS, United Kingdom; and Department of Biological Sciences, Herrin Hall, Stanford University, Stanford, CA, 94305-5020), AC( Sub-department of Animal Behavior, University of Cambridge, Madingley, Cambridge CB3 8AA, United Kingdom; Institute of Biological Anthropology, Oxford University, 58 Banbury Road, Oxford OX2 6QS, United Kingdom; and Department of Biological Sciences, Herrin Hall, Stanford University, Stanford, CA, 94305-5020) |