Smaller finches with less-powerful beaks perished. So the birds that were ... Now the next step: evolution. The Grants found that the offspring of the birds that survived the 1977 drought tended ...

Darwin, who assumed that evolution plodded along at a glacially ... out a niche by surviving on very small seeds. A finch with a smaller beak is not a new species of finch, but Peter Grant reckons ...

They also knew the differences in finch songs as related to beak size ... subpopulation facing all these droughts and then seeing beak evolution and then songs changing in a certain way and ...

The most characteristic feature of Darwin's finches is the diversification of beak morphology that has allowed these species to expand their utilization of food resources in Galápagos ...

The medium ground finch <i>Geospiza fortis</i> (illustrated here) diverged in beak size from the large ground finch (<i>Geospiza magnirostris</i>) on Daphne Major Island, Gal&aacute;pagos ...

because Darwin's finches use songs to attract mates, then song changes related to beak evolution could perhaps catalyze ecological speciation." But, at the time, Podos had no smoking-gun ...

Compare the beaks of six of Darwin's Finches from the Galápagos Islands - a useful starter video for a lesson on adaptation and evolution. Explore the evolution of life on our planet in the From the ...

Darwin’s finches helped inspire Darwin’s theory of evolution by natural selection, as their different beak shapes across different Galápagos islands demonstrated how species could adapt to ...