but if man can in a short time give beauty and an elegant carriage to his bantams, according to his standard of beauty, I can see no good reason to doubt that female birds, by selecting, during thousands of generations, the most melodious or beautiful males, according to their standard of beauty, might produce a marked effect.
baina gizakumeak, bere edertasun-ereduaren arabera, bere bantam-oiloei edertasuna eta itxura dotorea epe laburrean eman ahal badizkie, ez dut arrazoirik ikusten zalantzatan jartzeko txori emeek, ehundaka belaunalditan, beren edertasun-ereduaren arabera arrik ederren eta melodiotsuenak hautetsiz, ondoren nabarmena eragin dezaketenik.