- night heron, night raven - nocturnal or crepuscular herons
--1 is a kind of heron
--1 has particulars:black-crowned night heron, Nycticorax nycticorax; yellow-crowned night heron, Nyctanassa violacea
black-crowned night heron, Nycticorax nycticorax; yellow-crowned night heron, Nyctanassa violacea |