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.
The current system, the Three Domain System, groups organisms primarily based on differences in ribosomal RNA structure. Ribosomal RNA is a molecular building block for riboso â¦ mes. Under this system, organisms are classified into three domains and six kingdoms.The domains are Archaea, Bacteria, and Eukarya. The kingdoms are Archaebacteria (ancient bacteria), Eubacteria (true bacteria), Protista, Fungi, Plantae, and Animalia.ll the other kingdoms consist of eukaryotic organisms that do have structure to their cells. The differences between these eukaryotic kingdoms (plants, animals, and fungi) are based on how they aquire energy to live. Plants make their own energy from sunlight by using photosynthesis.