You can do the same thing, as the costs come down, for the Carolina parakeet, for the great auk, for the heath hen, for the ivory-billed woodpecker, for the Eskimo curlew, for the Caribbean monk seal, for the woolly mammoth.
Možete napraviti istu stvar, kad se troškovi smanje, s karolina papagajem, s velikom njorkom, s pticom Tympanuchus cupido cupido,  s bijelim djetlićem (Campephilus principalis), za pticom Numenius borealis,  s karipskom morskom medvjedicom, s vunenim mamutom.