How Much Should You Worry About Mountain Lion Attacks in Bay Area Parks?
Or should the mountain lions worry about us?
Wildlife
Are Baby Rattlesnakes the Most Dangerous Biters?
People often say baby rattlesnake bites are more dangerous than adult rattlesnake bites. Is the conventional wisdom correct?
Watching Wildlife Move Through Sonoma Valley
Science has led us to an increasing understanding of the importance of wildlife corridors. Sonoma pioneers the monitoring of a series of corridors.
Meet the “Electric Blue Tinfoil” Butterfly
One lepidopterist calls it North America's "most beautiful small butterfly." The Sonoran blue is also an indicator of weather and climate.
Charismatic Sea Ducks Seem to be Disappearing, But It’s Hard to Say Why
Are surf scoters disappearing from the San Francisco Bay? Or from the world?
Naturalist’s Notebook: How to Tell Northern California Hawks Apart
Watching distant raptors in dim light? Ignore color and look at values.
It’s the Season for Tundra Swans
How to find and identify the great birds in the Central Valley.
Toyon and Cedar Waxwings: A Classic Pairing
Cedar waxwing flocks picking through bushes of red berries is a classic sign of late fall.
How Long Does It Take to Restore a Population of Centenarian Fish?
The yelloweye rockfish can live to be 118 years old. It was declared overfished more than a decade ago, but recovery means patience.
Naturalist’s Notebook: Woodrats Fumigate Their Nests With Bay Leaves to Control Fleas
Life is so surprisingly webbed and interconnected.
