In the first confirmed sighting in more than 100 years, a pair of California condors were spotted nesting in the northern part of the state, scientists said. IE 11 is not supported.

A pair of captive-bred California condors has established a nest and appears to be nursing an egg in a Big Sur redwood tree -- Northern California's first documented condor nesting site in 101 years.

A comparison of nesting data recorded in the early 1900s with similar data today for more than 200 species of California birds shows that overall they are breeding five to 12 days earlier than ...

An ongoing UC Berkeley survey of California birds and comparison with century-old data shows that many birds are adjusting their life styles to breed 5-12 days earlier to avoid warming that has ...

Pairing bird data collected from 1911-1940 with 2003-2010 resurveys performed at the same sites, the authors found that breeding dates for California birds have advanced by approximately 5-12 days.

Endangered California shorebirds who took advantage of pandemic beach closures to expand their nesting area on a Northern California beach won’t be evicted, the California Coastal Commission announced ...