Morgan the "Dutch" orca has second calf at Spanish park / Camera trap spots endangered elephant mother and calf on the move / New calf with historic lineage a part of Bigg's orca 'baby boom' / Adorable endangered Malayan tapir calf born at Washington zoo / Another rare Javan rhino calf spotted at Indonesia park / Elephant calf born at a California zoo - with another on the way / Orphan B.C. orca calf unseen since May 10 despite family sightings: researchers / Yellowstone visitors clamor to catch a glimpse of an elusive white bison calf / Watch: Rare white bison calf in Yellowstone National Park seen as omen by Native Americans / Rare white bison calf reportedly born in Yellowstone