for tail-feathers like those of the fantail. Hence it must be assumed, not only that half-civilized man succeeded in thoroughly domesticating several species, but that he intentionally or by chance picked out extraordinarily abnormal species; and further, that these very species have since all become extinct or unknown.
Horregatik onartu beharra dago gizakume erdizibilizatuak hainbat espezie arrakastaz etxekotu ezezik, nahita edo halaxe gertaturik, espezie harrigarriro bitxiak aukeratu zituela, eta espezie horiek, gainera, suntsiturik edo ezezagun gertatu zirela.