We evaluated landscape associations related to heron and egret colony site selection and the productivity of successful great blue heron (Ardea herodias) and great egret (Ardea alba) nests. The study was based on annual observations (1991–2005) at 45 colony sites known to be active within 10 km of historic tidal marshes of northern San Francisco Bay.
When our wildlife researchers captured a picture of a black bear at Bouverie Preserve back in August, we thought it might be an anomaly. But a second, larger, bear showed up in October the same spot! According to the California Department of Fish and Wildlife, these are the southernmost documented sightings of black bears from the Mayacamas Range.