The New Encyclopaedia Britannica: Micropaedia:Knowledge in Depth, Volume 15

19th century adult America anemia Anseriformes antibodies antigens Asia behaviour bill birds blood group bodhisattva body Bolivia bone Brazil Brazilian breeding broadcasting bryophytes Buddha Buddhist building called Caprimulgiformes centimetres central centre China clotting colonial colour Coraciiformes countries cuckoos disease display early eggs electrons Eocene falconiforms feathers feeding feet female forest fossil frequency genera genus gruiform hemoglobin important incubation Indian insects islands known legs light Mahayana major male marrow metres monks nest normal North oilbird owls pair parrots passerines pattern pelecaniforms penguins percent perch period Piciformes pigeons plasma platelets plumage political population produced programs protein radio red cells region river scanning sexes short signal South span species sporangium structure Suborder surface tail television Theravada tion tissue toes tradition trees tropical tube usually Vajrayana varies wings woodpeckers World young