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Golden Gate Raptor Observatory

Red-shouldered hawk feather, illustration by Lora Roame
GGRO 2022 Season Summary: Research

It is no surprise that, as a forty-year-old Community Science program, the GGRO’s scientific publications and presentations should be steeped in collaboration and partnership.

Sharp-shinned hawk: comparing 2022 with the ten-year mean
2022 GGRO Season Summary: Introduction

There was a weird and striking delay in Sharpshins.

Red-shouldered Hawk Illustration by Siobhan Ruck
GGRO Season Summary 2022

The 2022 season summary of the Golden Gate Raptor Observatory

Illustration of soaring Turkey Vulture looking downward.
GGRO 2022 Season Summary: Turkey Vulture Study

Beyond being widely misunderstood by the general public, Turkey Vultures are often misunderstood from an ecological perspective as well.

Banding pliers illustration by Lora Roame
GGRO 2022 Season Summary: Banding

In 2022, the GGRO Banding Program had huge accomplishments before the field season even started.

Illustration of bald eagle.
GGRO 2022 Season Summary: Hawkwatch

The 2022 fall migration was a season of almost-recovery from COVID-19, but someone forgot to tip off the hawks, as we had one of our lowest overall counts in many years.

A Red-shouldered Hawk with brown and reddish-brown feathers looking over its shoulder, against a blue sky.
30 Years of Red-shouldered Hawk Migration

Explore trends over 30 years of Red-shouldered Hawk migration observed at Hawk Hill.

Two Turkey Vultures, one bearing the GGRO blue wing-tag 368R, bask on the outcropping below Hawk Hill
Vulture Ecology Study: 2020 Update

The Vulture Ecology Study: 2020 Update is part of the Golden Gate Raptor Observatory (GGRO) 2020 Pacific Raptor Report. It was authored by biologist Teresa Ely, GGRO’s Banding Manager and resident vulture expert.

GGRO Data

All data displayed on this site are preliminary and have not yet undergone quality control. Written permission is required to use the data.

Ferruginous Hawk
Raptors of Hawk Hill

During the autumn months, GGRO hawkwatch volunteers identify and tally 19 species of birds of prey.