A female house finch forages near the Hay Barn at UC Santa Cruz. House finches are common from coast to coast today and are familiar visitors to backyard feeders. These birds are native to the ...

House finch males have dark stripes there (as seen in your photo), while purple finches don’t. A female house finch has a fairly plain brown face, while a female purple finch has a contrasting ...

She lacks the distinct pale eyebrow found on the male. Identifying the male and female house from other Carpodacus finches requires care. The male house differs from the male purple finch not only ...

Female finches tend to mate with males that have the same size beaks. These factors together can add to the development of new species. The Grants return each year to Daphne Major to observe and ...

Natural selection at its most powerful winnowed certain finches harshly during a severe drought in 1977. That year, the vegetation withered. Seeds of all kinds were scarce. The small, soft ones ...

The paper M. Gazda et al., “A genetic mechanism for sexual dichromatism in birds,” Science, 368:1270–74, 2020. Male red siskins (Spinus cucullatus), a species of finch, flaunt orange-red bellies and ...

The scientists observed young male zebra finches working to learn their tunes. Some juvenile birds were given feedback after singing in the form of a video of a female bird performing arousal ...