Pigeons can identify cancerous tissue on x-rays.

A new study shows that pigeons can distinguish between healthy and cancerous tissue in x-rays and microscope slides with an accuracy rate of up to 99%.In a series of three experiments, led by Richard Levenson, professor of pathology and laboratory medicine at the University of California Davis Medical Center, it was found that pigeons have the capacity to learn how to identify whether an image shows healthy or cancerous breast tissue. The birds “share many visual system properties with humans”, according to the study.“With some training and selective food reinforcement, pigeons do just as well as humans in categorizing digitized slides and mammograms of benign and malignant human breast tissue,” read more here;http://www.theguardian.com/society/2015/nov/19/pigeons-can-identify-cancerous-tissue-on-x-rays-study-finds