There are 35 sub-species of Barn Owl. Barn Owls do not build nests themselves, but rely on a variety of nesting sites for laying their eggs. Tree cavities, rock ledges, chimneys & ledges in barns are among the sites that may be used & Barn Owls have sometimes been known to make their own burrows in riverbanks.
Organisms in biology are classified by this system: kingdom, phylum, class, order, genus, species. Kingdoms being the largest groups. Species is the smallest major group before they divide into sub groups. So Genus would be the next group larger if that is what you mean, but all the other groups would be larger as well.
L iving organisms are subdivided into 5 major kingdoms, including the Monera, the Protista (Protoctista), the Fungi, the Plantae, and the Animalia. Each kingdom is further subdivided into separate phyla or divisions. Generally animals are subdivided into phyla, while plants are subdivided into divisions.hese remarkable organisms are now placed in the domain Archaea. Other prokaryotes, including eubacteria and cyanobacteria, are placed in the domain Bacteria. All the kingdoms of eukaryotes, including Protista (Protoctista), Fungi, Plantae and Animalia, are placed in the domain Eukarya.