THE ATLANTIC – New York City’s crows were dying. It was the summer of 1999, and Tracey McNamara, then the chief veterinary pathologist at the Bronx Zoo, was growing concerned. The crows were dying in scores—staggering, having seizures, keeling over. Soon, the mysterious illness came for the zoo’s exotic birds. Three flamingos, a cormorant, an Asian pheasant—all dead within a few days of one another. Continue