An unidentified substance has killed or injured hundreds of birds so far.
It’s well-known that daylight length is an important migratory trigger, but a new study from UC Berkeley finds birds use infrasound, or tones lower than the normal range of human hearing, to flee bad weather.
Described by bird watchers as the go-to place for the "best birding on the bay," the Palo Alto Baylands Nature Preserve is a feather-filled oasis during winter. This is the time that waterfowl migrate through the Pacific Flyway and settle along the California coast for the season.
Birds of prey across North America are heading south for the winter and will be at their highest concentration for viewing in the next couple of weeks. More raptors fly by Hawk Hill in the Marin Headlands than anywhere else along our country's Pacific coastline.
Terns can be found in the Bay Area year round, but they're not all the same species. Learn more about the diversity of tern populations that visit us.