Central Taxonomic Thesaurus

Taxon Search
Organism
  Animalia
      Chordata
        Vertebrata
          Amniota
            Aves
                    Charadriiformes
                            Laridae
                                     Chroicocephalus
                                             Chroicocephalus serranus
                                     Leucophaeus
                                             Leucophaeus pipixcan