Sightings of coyotes with steely irises are sporadic and rare, so no one is sure how many individuals there are in the park or if their population is increasing or decreasing.
It is now a given that the health of an ecosystem can be measured by the abundance and diversity of the native organisms able to survive and thrive there – i.e., its level of biodiversity. The concept has now even … Read more
A reader finds a dead small mammal. Is it a mole? A shrew? A shrew mole?
The Argentine ant is likely the most successful invasive species in California. But a 30-year dataset from Jasper Ridge Biological Preserve suggests they’re not invincible.
An illustrated guide to nature to look for in spring 2022.
A year of exceptional drama in the lives of Cal’s peregrine falcons continues.
A fox looks sick in the Presidio, and Animal Care and Control reports increased numbers of sick raccoons and skunks.
Ever since the 1930s, when an improbable remnant colony of sea otters was discovered off the rugged Big Sur coast after more than a century of intensive fur hunting, Californians have worked to bring the animals back from the edge … Read more
Tens of thousands of newts try to cross Chileno Valley Road every year in the breeding season. Volunteers try to help them make it alive.
Where our winter shorebirds spend their summers