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Science

Hands taking picture of a plant using an iPhone
Events

City Nature Challenge 2024

City Nature Challenge is an international celebration of the incredible diversity of life all around us happens in two parts: an observation period and an identification period.
An owl sits with eyes closed in the canopy of a tree.
Conservation

Northern Spotted Owls: Why you should give a hoot

Marin County is a great place to be a Northern Spotted Owl. At least, that’s what we can imply from the data.
Day's End at Lands End
Events

SF Public Star Parties

USS San Francisco Memorial Parking Lot
Come join the San Francisco Amateur Astronomers for an evening of stargazing at Land’s End!
Collecting seeds at Mori Point.
Gateways Article

The great ‘treasure hunt’: Scouting seeds in the GGNRA

For Martine Glaros, it’s “like hiking and going on a treasure hunt at the same time.” Desmond Murray called it “needle in a haystack stuff.” Imagine finding a bloom in the park and going back weeks later when it’s no longer flowering, grasses and shrubs growing up around it, and...
Yolanda Molette connects with participants at a workshop featuring butterfly migration.
Article

Celebrating women in science: Yolanda Molette

Yolanda Molette, a Plant Ecologist with a degree in Ecology, Evolution and Systematics, Concentration in Conservation from San Francisco State University, just likes plants!
Tamalpais Bee Lab macrophotography. Shown is a blue and yellow Osmia coloradensis.
Gateways Article

Mt. Tam bees: We need you to 'bee' a park hero!

Thanks in part to the work of Tamalpais Bee Lab volunteers, we now know there are HUNDREDS of different bees on Mt. Tam. As these photos indicate, you never know what amazing, colorful bees you'll see!
Adult Red-tailed Hawk
Article

Raptors and Smoke

After a 2018 season of smoke and haze, GGRO Director Allen Fish explored impacts of air pollution on birds in his 2019 article for Pacific Raptor 40. As first responders battle wildfires across the state each year, we again wonder what effect these extreme climate phenomenon will have on raptor health and movement.
Uniformed firefighters gesture to each other as a prescribed fire burns on the grassy landscape.
Gateways Article

Protecting communities in the age of wildfire

As autumn nears, park managers are shifting priorities towards wildfire resilience and protecting communities along the wildland-urban interface: the high-risk zone where human development meets flammable vegetation.
Raptor migration trends at the Marin Headlands
Conservation

Raptor Migration Profiles

WHEN DO DIFFERENT RAPTORS PASS BY HAWK HILL? These graphs show how often a specific raptor has been sighted on any day of the season (normalized as raptors per hour of effort, or RPH). Historically, the peak of "Peak" is September 24th, with an average RPH of 95. Each species...
A monarch butterfly in nature.
Article

Backyard BioBlitz: See the parks from wherever you are

In times of great uncertainty, reconnecting to nature and grounding yourself in the outdoors can be a calming practice. Here are a couple of suggestions on how to get started.