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

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

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 ...

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 ...