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.

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?

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?

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.

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. 

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. 

This year marks three decades since the Presidio became a national park site. Over that time, incredible transformations have taken place – from Crissy Field to the Tunnel Tops – thanks to you, our park champions.

For the first time, you can see the fledgling family of Peregrine Falcons growing up on Alcatraz! See expert tips how to spot these birds of prey while visiting the island.