The mating song of a male Darwin's medium ground finch. Credit: Jeff Podos He knew, for instance, that beaks can either evolve powerfully to crush hard seeds or they can remain more delicate, thereby ...

They say that hindsight is 20/20, and though the theory of ecological speciation -- which holds that new species emerge in response to ecological changes -- seems to hold in retrospect, it has been ...

Parasites are nasty little bastards. The freeloaders survive by siphoning off the vital nutrients our bodies depend on, making us feel tired and sick. But, bizarrely, they can also impact sex. The ...

Invasive parasites in the Galápagos Islands may leave some Darwin’s tree finches singing the blues. The nonnative Philornis downsi fly infests the birds’ nests and lays its eggs there. Fly larvae ...

AMHERST, Mass. – They say that hindsight is 20/20, and though the theory of ecological speciation — which holds that new species emerge in response to ecological changes — seems to hold in retrospect, ...