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owl at Muir Woods
Owls: Custom-Made for Night Hunting

The trailside discovery of a Great Horned Owl tail feather sparked this rumination: What are some of the many adaptations that make owls such proficient hunters in the dark, quiet night? Take wing and learn more about their unique traits.

Alcatraz Historic Gardens
Unearthed: Secrets of Alcatraz Gardens’ Ribbon-Winning Compost

We caught up with “Chief Composting Officer” Dick Miner to get the scoop on Alcatraz Historic Gardens’ award-winning compost—and learn some tips for your own.

Hawk Hill birdwatching
2014 Migration: Rise of the Rock Star Raptors

What do you call two smiling raptor banders? A pair o’grins! Beaming faces were abundant on Hawk Hill during the fall 2014 migration season, which featured plenty of “celebrity” raptors, a loopy Redtail, a bald eagle flyby, and 300 intrepid Golden Gate Raptor Observatory volunteers.

Red-tailed Hawk
Big Bird, Little Bird: Size and Identifying Sex of Raptors

As a nature lover hiking through the Marin Headlands, you might be able to quickly identify a couple of raptors flying overhead. At first glance, you also might discern their relative sizes. But what does that tell you about the sex of the raptors?

What Bird Personality Fits Your Bill?

In the film “Moonrise Kingdom,” Sam pointed to Suzy and asked: “What kind of bird are YOU?” Now you’ll never get caught without an answer, thanks to our new personality quiz, released just in time for International Migratory Bird Day. Find out your feathered phenotype!

Arabis blepharophylla, the coast rock cress
Cracking the Great Pollination Mystery

What’s the most beautiful native plant in the parklands that you’ve never seen? Here’s a hint: its magenta flowers are so bright that it’s known by a range of common names that sound like lipsticks: rose delight, red sensation, and spring charm. Still stumped? Read on, and learn about its intriguing mystery.

Tennessee Valley trail
Five Family-Friendly Hikes in the Golden Gate National Parks

What’s the perfect dessert after a stomach-stretching Thanksgiving dinner? An exploration of some sweet trails in and around the Golden Gate National Parks, of course! Here are five hikes that will help your whole family work off that holiday meal.

Muir Beach
Muir Beach Closed July 8-Mid December, 2013

Although Muir Beach will be closed through November, visitors—and the environment—have a lot to gain. When the area reopens in late fall, there will be improved amenities and better habitat for threatened and endangered species. Read on for details.

bird watching
Birds of a Feather: A GGRO Volunteer Finds Her Flock

When volunteer Christina Cambie “migrated” from England, she had no idea she would find comfort and community in her new home by studying another migration—that of raptors over Hawk Hill.

Coyote Brush
The Importance of So Much Little White Fluff

One sure sign of “summer” in the Golden Gate National Parks is the sight of fluffy white seed blanketing hillsides. But where do these seeds come from? Where are they going? And why do we care? A Presidio seed collector takes a closer look.