The Beak of the Finch

"The Beak of the Finch" refers to a landmark study of evolution conducted by biologists Peter and Rosemary Grant on the Galápagos finches. They observed how differing environmental conditions led to variations in the birds' beak shapes and sizes over generations, demonstrating natural selection in action. During droughts, for example, finches with deeper beaks could crack tougher seeds, giving them a survival advantage. This research illustrates how species adapt to their environments over time, providing powerful evidence for Darwin's theory of evolution through natural selection.