? caerulescens Vieillot, 1817 Dataset GBIF Backbone Taxonomy Rank UNRANKED Classification kingdom Animalia phylum Chordata class Aves order Pelecaniformes family Threskiornithidae genus Theristicus species Theristicus caerulescens Name Homonyms ? caerulescens Vieillot, 1817 ? caerulescens Hartlaub, 1865 ? caerulescens Vieillot, 1817