Green Hairstreak Butterfly Open House and Bioblitz

Schedule

Sun Apr 26 2026 at 11:00 am to 02:00 pm

UTC-07:00

Location

Golden Gate Heights Park | San Francisco, CA

Advertisement
Celebrate San Francisco's biodiversity by teaming up with Nature in the City for the City Nature Challenge!
About this Event

Join Nature in the City for an Open House and Bioblitz in the Green Hairstreak Corridor.

Participants are encouraged to add observations through iNaturalist or Seek as part of the City Nature Challenge, a worldwide four-day event. Your sightings will count toward Nature in the City's Green Hairstreak Corridor monitoring efforts.

Guided walks will help you find and explore our various habitat sites. This is a collaborative event intended to nurture your specific interests and ignite your curiosity.

Program:

Arrive between 11 a.m. and 11:45 p.m. at Golden Gate Heights Park picnic area, where we'll have snacks and beverages. Then join an expert naturalist on a walk through the Corridor to add observations on iNaturalist or Seek. Nature in the City staff and volunteers will help you learn how to record wildlife, and we hope everyone gets a close-up view of Green Hairstreak butterflies!

Walks will depart at approx 11:45 a.m. and last about 1.5 hours.

At 1:30 p.m., groups will meet back at the Golden Gate Heights Park picnic area to celebrate Bioblitz highlights and share the number of people, observations, and species we recorded as a group.

Preparation:

If you want to participate in the City Nature Challenge, please download iNaturalist or Seek on your smartphone and set up an account beforehand if you don't have one. Otherwise, bring water, sturdy shoes, and layers.

Note: there will be a portable toilet at the Golden Gate Heights Park picnic area.

Meeting Location:

Meet at the Golden Gate Heights Park Picnic Area on 12th Ave.

Transportation:

The Muni 6 bus drops off at the top of the Quintara Steps, and Golden Gate Heights Park is a five-minute walk from here; the Muni 66 stops at 15th and Quintara.

Weather:

Heavy rain cancels the event. Organizers will make the call on the morning of the event and notify the participants via email.


Cost:

This walk is FREE* to attend (with RSVPs kindly requested).

Donations (in cash or online) can be made to Nature in the City on the day of the event. Special bonus! Everyone who donates $10 and above will receive a copy of the Nature in the City Map.

Or donate to Nature in the City using our secure online form, and weโ€™ll send you monthly emails with a full events listing, local nature information, and access to more fun perks.


Event Photos
Event Photos
Agenda

๐Ÿ•‘: 11:00 AM - 11:45 AM
Gather at Golden Gate Heights Park

Info: We'll start our day at the picnic area at the top of Golden Gate Heights Park, with snacks, info about the Green Hairstreak Butterfly, and instructions on conducting a bioblitz.


๐Ÿ•‘: 11:45 AM - 01:30 PM
Walks and bioblitzing throughout the Green Hairstreak Corridor

Info: Groups will be assigned based on interest and skills: Families, Beginner Naturalists, and Skilled Naturalists. Here's your chance to spot the Green Hairstreak Butterfly in its habitat!


๐Ÿ•‘: 01:30 PM - 02:00 PM
Reconvene at Golden Gate Heights Park to compare findings

Info: Groups will return to the park for snacks and drinks, and to share the nature observations made.


Advertisement

Where is it happening?

Golden Gate Heights Park, 2002 12th Avenue, San Francisco, United States

Event Location & Nearby Stays:

Tickets

USD 0.00

Icon
Know whatโ€™s Happening Next โ€” before everyone else does.
Nature in the City

Host or Publisher Nature in the City

Ask AI if this event suits you:

Discover More Events in San Francisco

ACTV Studio IRL: Vuori Union St x BODYROK
Sun, 26 Apr at 09:00 am ACTV Studio IRL: Vuori Union St x BODYROK

Vuori

WORKSHOPS SHOPPING
Dance with Us: GROOV3 with Ben Allen
Sun, 26 Apr at 10:00 am Dance with Us: GROOV3 with Ben Allen

Jewish Community Center of San Francisco

ENTERTAINMENT WORKSHOPS
Foundation 3: Character & Relationship with Mick Laugs
Sun, 26 Apr at 10:30 am Foundation 3: Character & Relationship with Mick Laugs

BATS Annex

WORKSHOPS ART
Veer Wagon & Stroller Demo Day & Giveaway!
Sun, 26 Apr at 10:30 am Veer Wagon & Stroller Demo Day & Giveaway!

Aldea Home & Baby

TRIPS-ADVENTURES
2026 Ursuline Alumnae Luncheon
Sun, 26 Apr at 11:30 am 2026 Ursuline Alumnae Luncheon

Basque Cultural Center - Restaurant & Banquet Services

WORKSHOPS
Kokedama Workshop
Sun, 26 Apr at 11:30 am Kokedama Workshop

Japan Center East Mall, Studio Gen

WORKSHOPS ART
Dogpatch Clean Up
Sun, 26 Apr at 12:00 pm Dogpatch Clean Up

Dogpatch Games

De-Escalation Training
Sun, 26 Apr at 12:00 pm De-Escalation Training

SF Dharma Collective

WORKSHOPS HEALTH-WELLNESS
Recology Artist in Residence Program Tour (for artists and general public )
Sat, 15 Jun at 10:00 am Recology Artist in Residence Program Tour (for artists and general public )

The John A. Legnitto Environmental Learning Center

ART SPORTS
Alemany Farm Volunteer Day
Sat, 22 May at 01:00 pm Alemany Farm Volunteer Day

Alemany Farm

VOLUNTEERING HEALTH-WELLNESS
Tree Meditation & Urban Foraging Plant Walk
Sun, 11 Jan at 02:00 pm Tree Meditation & Urban Foraging Plant Walk

HAUM Yoga - Haight Ashbury, Stanyan Street, San Francisco, CA, USA

HEALTH-WELLNESS WORKSHOPS
Ecologies in Motion
Mon, 02 Mar at 05:15 pm Ecologies in Motion

1315 Natoma St

WORKSHOPS ART
New Earth Guardian Initiation: A Guided Journey
Mon, 23 Mar at 07:00 pm New Earth Guardian Initiation: A Guided Journey

TANTARA Event Space Rental (Yoga, Meditation, Workshops)

Bayview Gateway Planting Party
Sat, 04 Apr at 09:00 am Bayview Gateway Planting Party

Bayview Gateway, 3rd Street & Meade Avenue

International Ocean Film Festival in San Francisco
Fri, 10 Apr at 04:00 pm International Ocean Film Festival in San Francisco

Cowell Theater, Fort Mason

FESTIVALS ENTERTAINMENT
Rising Tides - Fundraiser for PangeaSeed
Fri, 10 Apr at 05:00 pm Rising Tides - Fundraiser for PangeaSeed

111 Minna Gallery and Event Space

NONPROFIT ART
Presidio Resident Sustainability Fair
Sat, 11 Apr at 08:00 am Presidio Resident Sustainability Fair

40 Graham St

NONPROFIT
BUGOLOGY
Sat, 11 Apr BUGOLOGY

Dogpatch Hub

Bay Area Youth Environmental Summit (BAYES)
Sat, 11 Apr at 01:00 pm Bay Area Youth Environmental Summit (BAYES)

826 Valencia Tenderloin Center

BUSINESS WORKSHOPS
Tree Meditation + Herbal Foraging
Sat, 11 Apr at 02:00 pm Tree Meditation + Herbal Foraging

780 Stanyan St

HEALTH-WELLNESS MEDITATION

What's Happening Next in San Francisco?

Discover San Francisco Events