Two chicks hatched at the Smithsonian National Zoo’s campus in Front Royal, Virginia, have given hope to a species classified as extinct in the wild. The two sihek chicks, a male and a female, were born in mid-April and join a total world sihek population of just 125. “Every sihek chick is special, but these two are particularly precious, according to keeper Erica Royer. Parents Antonio, five, and Poki, two, are first timers and have never bred …