SUBJECTS:
<INDUSTRY>
< STRUCTURES >
< PEOPLE >
< NATURE >
< COUNTRIES >
< CITIES >
< OTHERS >
Sub-subjects:
< ANIMALS >
< DOMESTIC ANIMALS >
< BIRDS >
< Ducks >
< Fregatebirds >
< Geese >
< Voltures >
< Seagulls >
< Parrots >
< Pelicanos >
< Herons >
< Swans >
< Singing Birds >
< Storks >
< Various >
< WILDLIFE >
< LANDSCAPES >
< PLANTS >
< WATERS >
