Researchers are trying to understand why some wild species do better than others over time, as the environment changes.

For several reasons, swamp sparrows didn’t fit into the first two parts of this series, and European house sparrows really don’t belong on this continent, even though they have been here since the ...

How much does it matter where you are born, or whether you are heavy or light, if you are a house sparrow? Researcher Kenneth ...

Nowadays as I take my morning walk I see and hear many different sparrows. Those species breeding are relatively easy to see, though some, unlike good children, are heard but not seen. Song sparrows ...

In Marin, we have a greater variety and abundance of birds in winter than in summer. Now is the time to see big flocks of shorebirds, our maximum diversity of ducks and a wide selection of raptor ...

Birds with bold crown coloring are dominant over those with duller crown colors. Though highly territorial on their summer breeding grounds, golden-crowned sparrows form winter flocks with the same ...

If you have been paying attention to your backyard birdseed feeder, you may have noticed some new faces among the usual suspects. Fall brings the arrival of white-crowned sparrows, and soon these ...