Pigeons (Columba livia) as Trainable Observers of Pathology and Radiology Breast Cancer Images Levenson, Richard M. ; Krupinski, Elizabeth A. ; Navarro, Victor M. ; Wasserman, Edward A. Abstract Publication: PLoS ONE Pub Date: November 2015 DOI: 10.1371/journal.pone.0141357 Bibcode: 2015PLoSO..1041357L