Natural selection at its most powerful winnowed certain finches harshly during a severe drought in 1977. That year, the vegetation withered. Seeds of all kinds were scarce. The small, soft ones ...

The Grants had documented natural selection in action. While beak size is clearly related to feeding strategies, it is also related to reproduction. Female finches tend to mate with males that ...

He began contemplating while aboard HMS Beagle, but it took several years before he came up with his theory of evolution by natural selection. The finches – once they had been identified as different ...

Overall, there are about 15 closely related species of Darwin's finches. The video could be used as starter on a lesson on evolution, adaptation and natural selection, or as a part of a discussion on ...

This meant that Darwin and Wallace worked together to improve the explanation of natural selection ... of the different heads and beaks of finches Darwin's observations revealed that the finches ...

The modern evolutionary synthesis, which marries Darwin's theory of natural selection with Mendel's ... of magnitude below the size of Darwin's finches or Mendel's pea plants, quantum mechanics ...