Naturalist’s Notebook: The Nuances of Yellow-Rumped Warblers
Yellow-rumped warblers are around in winter. But which variant are you seeing?
Category: Biodiversity
Winter 2025 Almanac: Salamanders and Sperm Whales
Life during winter is full of conversation.
A Mussel Bed is Full of Life, 80 Years Later
The invertebrates found in a mussel bed on Dillon Beach in western Marin County are just as abundant as they were in 1941. But the types of organisms have changed.
The Adder’s-Tongue—Our Fetid Friend in the Shadows
Deep in the shadows of redwood understory, when winter rains still drip on the mosses and ferns, an unusual flower heralds the beginning of the blooms—a sort of “flower new year” before spring.
What Lies Beneath
Can we keep Lake Tahoe's aquatic invaders at bay?
A Sapsucker Superspecies Is Evolving In Our Midst
Rows of pea-size holes, drilled in the trunks of thin-barked trees, are the beginnings of a story that stretches back millions of years.
Ecologist Erica Spotswood Says Cities Can Be Wildlife Hotspots, Too
The urban ecologist discusses growing cities that can support species diversity, from backyards to tech campuses. But that may come with making tough choices.
Fall 2024 Almanac: The Ocean
Ocean life has its seasons, just like land. In fall, furious upwelling relaxes; warmer water pushes toward shore. A tranquil pause before winter’s storms.
The Backstory on Pacifica’s Whale Bonanza
Scientists surveying marine life off our coastline have been watching marine mammals roll in for the Bay Area seafood buffet.
Safe Passage for Wildlife
How scientists and planners are creating safe passage for wildlife moving across the South Bay—and beyond. Sponsored by POST.
