2 · Nature
25 · earth, world as celestial body
25F · animals
25F3 · birds
25F33 · predatory birds
25F33(...) · predatory birds (with NAME)
25F33(EAGLE) · predatory birds: eagle
25F33(EAGLE)(+4) · predatory birds: eagle (+ animal behaviour)
25F33(EAGLE)(+41) · predatory birds: eagle (+ birth of an animal)
25F33(EAGLE)(+411) · predatory birds: eagle (+ birth from an egg)