For half the year, a little brown bird on the northernmost islands of the Galápagos uses its wickedly sharp beak to pick at seeds, nectar and insects. But when the climate dries out, it drinks blood.

Did you know that there are birds that feed on blood? The animals live on the Galapagos Islands and are aptly named vampire finches. One species is particularly greedy for the lifeblood of other ...

A new study led by UConn researchers gives hope that some populations of Darwin's finches may be better armed to survive a devastating invasive parasite. Credit: Sarah A. Knutie et al Scientists are ...

Darwin's famous finches are under threat from these parasitic flies. But new research shows some have a better chance of survival than others. A small ground finch builds a nest on Santa Cruz Island, ...

Halloween is the time of vampires, bats, and other dark figures. But bloodsuckers aren’t just found in horror stories–they ...

The Galápagos Islands are renowned for their unique ecology and rich biodiversity. Isolated and remote, these islands are home to some of the most unique and rare species on Earth. However, hidden ...

On the Galapagos Islands, a ground finch that usually munched on small, soft seeds was forced, during a drought, to eat harder, larger ones. Within the space of a few generations, the bird evolved a ...

Scientists are working hard to thwart a blood-sucking fly that is decimating populations of the charismatic finches that helped Charles Darwin formulate the theory of evolution. The avian vampire fly, ...