alone
animal
apprehend
background
beak
beautiful
beauty
bird
cacatua
cage
close
cockatoo
concept
constrain
cruelty
cute
depress
domestic
exotic
feather
finch
free
freedom
impound
imprisoned
lonely
macaw
natural
nature
net
parakeet
parrot
pet
portrait
pretty
sad
sorrow
torture
unhappy
up
vieillot
white
wild
wildlife
wing
zoo