finch

Now, house finches, for instance, they have a really terrible disease that’s like pink eye, and it’s really taking them down.

On a recent morning, Shultz opened a wooden tray to reveal rows of house finches, a palm-sized bird commonly found in Los Angeles.

For example, Darwin's finches illustrate how such changes can manifest: They have evolved different beak shapes adapted to various food supplies available on the Galápagos Island.

Vampire ground finches will resort to feasting on the blood of other birds if conditions are particularly harsh.

Their numbers, however, have increased significantly in proportion to the backyard bird feeders that support and contribute to their prey base, from hummingbirds to house finches.