Black-crowned Night Heron Another Black-crowned Night Heron at the National Zoo in Washington, DC. Though this was shot at the zoo, this is not a captive bird, but one of the many free and wild birds that nests in the zoo's trees. LENS: 500/4 + 1.4x | FILM: Fuji Provia 100F | EXPOSURE: f/5.6 at 1/?" | DATE: 05/01 |