Charles Darwin's Theory
1831 - Captain's Companion, Ship's geologist & naturalist,
(on HMS Beagle) 22 yrs - world voyage to S.America,
S.Sea Islands; supposed to focus on geology, also got drawn into animal, plant collection; S.America - discovers
new common rhea (ostrich-like bird) form while eating it
Galapagos Islands - large species variety, adapted to each
their own islands, local conditions, detailed drawings, observations made - cam home w/ plenty of new ideas