Yellow Warbler Medium Ground Finch female Leatherleaf
Daphne Major Daphne Minor Daphne Major is the location of Peter and Rosemary Grant’s research onDarwin’s Finches as described in The Beak of the Finch by Jonathan Weiner. It is visible from Bachas Beach.
CHARLES ROBERT DARWIN, 1809-1882 Darwin visits the Galápagos, September, 1835 On the Origin of Species by Means of Natural Selection, or the Preservation of Favored Races in the Struggle for Life, 1859 The Descent of Man, and Selection in Relation to Sex, 1871
The Origin “does not document the origin of a single species,or a single case of natural selection, or the preservation of onefavored race in the struggle for life.”Darwin “marshalled an enormous mass of evidence thatevolution has happened. Yet Darwin never saw it happen.”“Natural selection by itself is not evolution. It is only amechanism … that can lead to evolution … . Natural selectiontakes place within a generation, but evolution takes placeacross generations.” –– Jonathan Weiner, The Beak of the Finch
Darwin’s Finches● Thirteen species, thought to have descended from a common ancestor Ground Finches: Small, Medium, Large and Sharp-beaked Tree Finches: Small, Medium and Large Cactus Finch and Large Cactus Finch Vegetarian Finch Warbler Finch Mangrove Finch Woodpecker Finch● Some can be found throughout the islands; others are localized● All are rather drab; usually the males are dark in color, while the females are lighter and streaked
“The diversity of beak structure and feeding habits within thisgroup is remarkable. The individual species feed in a variety ofways with each specialized in a particular way. Some eatseeds, some eat insects, some remove ticks fromtortoises, some eat leaves, some eat flowers, some drink bloodfrom seabirds, and there are two species that use twigs orcactus spines to extract insect larvae from holes in the deadbranches of trees.” –– Michael Jackson, Galápagos: A Natural History