Phylum Chordata Bateson, 1885 - chordates Subphylum Vertebrata Cuvier, 1812 - vertebrates Class Aves Linnaeus, 1758 - birds see Subclass Aves Linnaeus, 1758 Order Columbiformes Latham, 1790 - pigeons and allies Family Pteroclididae - sandgrouse see Family Pteroclidae Bonaparte, 1831