On a fine gray afternoon in late October, I came across an impressive cone midden beneath a towering red spruce. While it was ...

The lure of little guys of the wrong species — plus an invasion of flies — may drive one of Darwin’s finch species toward extinction. Diverse finches that Darwin saw scattered across the Galápagos ...

There are now at least 13 species of finches on the Galapagos Islands, each filling a different niche on different islands. All of them evolved from one ancestral species, which colonized the islands ...

Winter 2021-22 should not be an irruption year, which would send finch species like the evening grosbeak from the arboreal forests of northern Canada south as far as backyard feeders in Pennsylvania.

Freed from the threat of invasive predators, Galapagos birds are performing astonishing feats of return and innovation – 200 ...

New research from CU Boulder confirms that there are not, in fact, multiple species of Redpoll Finches, as previously thought For birders struggling to figure out what kind of Redpoll they’re watching ...

To put it simply, volcanoes erupt while bird populations irrupt. An “irruption” is described as “a dramatic, irregular migration of large numbers of birds to an area where they are not typically found ...

Spruce trees provide two types of food; cones like this one that contain seeds for birds to eat and needles that caterpillars eat. / BILL DANIELSON / For the Gazette Sign up for the Gazette's morning ...

Despite the traditional view that species do not exchange genes by hybridisation, recent studies show that gene flow between closely related species is more common than previously thought. A team of ...

For many birders winter centers on a specific event, the annual Christmas Bird Count. It's a continent-wide effort involving 24-hour counts during a designated period spanning Christmas and New Years.