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)(+42) · predatory birds: eagle (+ feeding and care of young)
25F33(EAGLE)(+421) · predatory birds: eagle (+ nest, den, burrow)