a white-fronted tern with fish in mouth

agile austrailia aves avian baby beautiful bird birds black breeding capture catch caught chick cliff conservation decreasing elegant endemic feather feet fish flight fly food fronted graceful hemisphere island kahawai marsh monogamous mouth native nature new ocean ornithology population protected reflection risk sea seabird south southern species sterna striata swallow swift tern warbler webbed white whitefronted wild wildlife wing wingspan yellow zealand