... > yso-käsitteet (fi) > endurant > systems > systems in natural science > fauna > avifauna > birds > strigiformes > owls > great grey owl

... > yso-käsitteet (fi) > endurant > systems > systems in natural science > entirety of living organisms > animal kingdom > chordates > vertebrates > birds > strigiformes > owls > great grey owl

... > yso-käsitteet (fi) > endurant > physical object > organic structure > organisms > eukaryotes > animals > chordates > vertebrates > birds > strigiformes > owls > great grey owl