We have to go back in time quite far to understand the inspiration for this quilt. In 1835 the naturalist Charles Darwins voyage led him to the Galápagos Islands. He discovered finches that looked a bit different from island to island. Specifically the size and shape of their beak differed. He noticed similarities to the finches he had seen in Latin America. All finches must originate from a kind of primeval finch!
By being isolated per island, the finches developed beaks that helped them eat nuts that grew on the islands. In time, several different species originated, to a total of 13 at this present moment!
This is, or was the engine of evolution, based on natural selection.