During his visit to the Galapagos Islands Charles Darwin saw that each island was populated by a little finch. These birds were all very similar, yet from one island to another there were some differences in the size and shape of the beak. read more
During his visit to the Galapagos Islands Charles Darwin saw that each island was populated by a little finch. These birds were all very similar, yet from one island to another there were some differences in the size and shape of the beak. read more