A male medium ground finch (left) next to a female small ground finch (right). It's unclear what the nature of their relationship is—but if the male is small for his kind, love could blossom.

In the Galapagos Islands, Darwin's finches drawn to junk food are experiencing changes in their gut microbiota and their body ... focusing on breeding female small ground finches (Geospiza ...

By Liz Kimbrough In the sunbaked Galápagos Islands, a male finch perches on a branch, hearing what sounds like another bird’s song. But something’s not quite right. The song is slower and ...

Peter and Rosemary Grant would fare well on "Survivor."Living alone on a small, uninhabited island, communicating with the mainland only by radio and relying on a national park service's monthly ...

We term this ‘backcrossing’ — suppose a male cactus finch breeds with a female medium ground finch. The father’s song is a key determinant of the offspring’s mating process.

A small ground finch builds a nest on Santa Cruz Island, in the Galápagos. Invasive avian vampire flies lay their eggs in the nests so the larvae can feed on the blood of finch chicks.

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 ...

New species of Galapagos finch ‘can arise after just six consecutive droughts’ The Darwin finches, a group of about 18 species of passerine birds, are well known for their wide diversity in ...

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 ...

Scientists have revealed that just six consecutive droughts can lead to the emergence of a new species of finch in the Galapagos islands. The Galapagos, an Ecuadorian province, is renowned for its ...

The Darwin finches, a group of about 18 species of passerine birds, are well known for their wide diversity in beak form and function. New species of Galapagos finch ‘can arise after just six ...