Fig. 8. Evidence for individual odor recognition in Antarctic prions. (A–C) Each histogram shows the percentage of birds that chose a particular odor from three Y-maze experiments. (A) Conspecific (CS) vs personal (Per.) odor (N=22). (B) Conspecific vs partner (P) odor (N=20). (C) Control vs personal odor (N=21). NC indicates no-choice. P values were determined by a binomial test. Note that experiments were not conducted sequentially but were dove-tailed depending on the availability of birds. (D) Photograph of an Antarctic prion (Pachyptila desolata). [Adapted from Bonadonna and Nevitt (Bonadonna and Nevitt, 2004).]