 Ramba uchinyora ndima iyi - Darwins finches marudzi akasiyana-siyana ane ukama hwepedyo ayo Darwin akawana paGalapagos Islands. Rwendo rwaDarwin paBeagle, uye zvikuru zvikuru shiri dzinonzi finches, dzinozivikanwa kuva dzakapesvedzera kufunga kwake zvokuti aizobudisa gare gare rondedzero inokosha yemhindumupindu kupfurikidza nokusarudza kwomuzvarirwo. Darwin akataura kuti kwaifanira kuva nemumwe tateguru. Gare gare, nzvero huru yakaitwa naPeter naRosemary Grant. Shiri dzose dzinenge dzakakura zvakaenzana 10 × 20 cm. Zvinosiyana zvikurukuru muchimiro chomuromo. Muromo wacho wakashanduka kuti ukwanise kudya. Shiri dzacho dzose dzine ruvara rwakaita shava kana kuti nhema. Dzine mapapiro maduku akapoteredzwa uye muswe wakapoteredzwa uyo kazhinji kazhinji unooneka wakakotamira kurutivi rumwe. Madzimai akawanda anosvika pakuva neruvara rwakasviba, asi madzimai anosvika pakuva neruvara rwakasvibira. Kunze kwezvipembenene zvinodya miriwo uye zvinodya miti, varume vacho havambofi vakava vatema zvachose asi vane musoro mutema, mutsipa mutema uye chipfuva chitema. Warbler, Woodpecker uye Mangrove Finches ane ruvara rwakafanana nerwomuorivhi. 