What can we help find?

4

Conservation

Small blue butterfly with two rows of white-rimmed black dots on the underside of its wings, drinking from a flower
Conservation

Mission Blue Butterfly

Remaining populations of Mission blue butterfly are found in only a few locations around the San Francisco Bay area.
Dark brown, wet tree bark in a rippled pattern with scattered green patches of lichen.
Conservation

Redwoods, Water, and Wonder

Roy's Redwoods Preserve is a magical place, home to especially large redwood trees and other inhabitants like the California giant salamander. It's one of only four parks in Marin County to enjoy old-growth redwoods, and the only one accessible to people of all abilities.
A group Kayaking at Bothin Marsh in Marin, with Mount Tamalpais in the background.
Conservation

Marin County Sea Level Rise

Rising sea levels and more severe storm flooding as a result of climate disruption are impacting Marin County. These impacts are expected to increase in frequency and severity as sea level rise accelerates.
A brownish Red-tailed hawk perches on green evergreen branches with a blue sky background.
Conservation

How are rodenticides affecting raptors?

Anticoagulant rodenticides (AR) are used to control pests, but secondary exposure can affect non-target species like raptors. Researchers tested juvenile Red-tailed Hawks to learn more.
A small bird sits in the center on a branch with a white sky background and many green oak leaves and brownish twigs below.
Conservation

What's causing changes in Kestrels?

Data from seven fall raptor migration sites show that not only have kestrel numbers have been declining across North America, they've also been getting smaller.
A woman in a purple coat stands at the right of the photo with arm extended. A brown & cream hawk flies with wings extended on left. Background is a partly cloudy sky with the Golden Gate bridge and San Francisco Bay, and in the foreground green shrubs
Conservation

Which Red-tailed Hawks migrate when?

Red-tailed Hawks are common raptors in the Bay Area, yet males and females can be difficult to tell apart. Researchers used DNA and small differences in size to better understand their migration.
Close-up of a kestrel's face.
Conservation

How does raptor migration timing vary?

At GGRO, we observe that female raptors typically migrate before males and juveniles typically migrate before adults. How does this compare to findings at other observation stations?
A white and brown Broad-winged Hawk soars against a blue sky.
Conservation

Where do Broad-winged Hawks go in California?

We don't know much about Broad-winged Hawks' migration along the Pacific Flyway, so GGRO volunteers tracked the journeys of five. Where did they go?
A brown-colored Merlin flying wings spread against a pale blue sky
Conservation

Messy eaters: what's on Merlins' migration menu?

A novel technique collecting songbird DNA from migratory raptors, and using DNA barcoding to identify prey species, helps quantify raptor diet during migration and track trends through time.
Sharaya Souza sits surrounded by orange poppies.
Conservation

Wildflowers at Black Point Gardens in San Francisco