Author Affiliations +
A. M. Bell,1 J. M. Davis,2 C. M. Greene,2,3 S. C. Lema,2 J. V. Watters,2 L. H. Yang1
1Center for Population Biology, University of California, One Shields Avenue, Davis, California 95616
2Center for Animal Behavior, University of California, One Shields Avenue, Davis, California 95616
3ambell@ucdavis.edu