How do you know that finches' beak depth is heritable? You can see from Figure 2 that there is a correlation between the parents' and offsprings' beak size. How did the finch population change ...

Her counterpart echoed how Luddington felt. Capshaw added that “it never occurred to me to not believe [Finch]. The 48-year-old would see her on set and never felt a moment of suspicion ...

Many other birds, including chickadees, cardinals and house finches, will eat safflower (and in the spring, the rose-breasted grosbeaks seem to seek out this seed). Sparrows will continue to visit ...

One interesting exception comes from the semi-deserts of Southern Africa. The Sociable Weaver is a small finch that builds the world’s largest nests, often housing hundreds of birds. These communal ...