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Maricopa County Parks and Recreation: McDowell – Invasive Species Removal

McDowell Mountain Regional Park 16300 McDowell Mountain Park Dr. MMRP, Fountain Hills

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Participants will learn to identify several invasive species, their phenology...

Free with Park Fee

Verde Valley Birding and Nature Festival: Sedona Wetlands & Red Rock State Park with Steven Prager & Melissa Fratello Field Trip

Dead Horse Ranch State Park Dead Horse Ranch State Park, Cottonwood

We will start the day at Red Rock State Park, getting in before the park opens with Tori Marshall, Ranger. Tori will lead us in about a 4 hour program including an introductory movie about cleaning up that area of Oak Creek and possibly meeting Moonlight, the Owl. We will then head off to the...

$150

Verde Valley Birding and Nature Festival: FLAGSTAFF – Anderson Mesa IBA BIG DAY Field Trip

Dead Horse Ranch State Park Dead Horse Ranch State Park, Cottonwood

Explore Northern Arizona’s Anderson Mesa with Wildlife Biologist and local birder, Brooks Hart. In addition, you will have Jennie MacFarland, Director of Bird Conservation and a coordinator for Arizona IBA’s with you. Anderson Mesa is an Important Bird Area (IBA) comprising various habitat types, and supports coniferous and deciduous trees, pinyon pine & juniper dotted...

$75

Maricopa County Parks and Recreation: Cave Creek – Invasive Species Removal

Cave Creek Regional Park 37900 E. Cave Creek Pkwy., Cave Creek

Desert Defender volunteers needed! Join us in removing invasive species and reducing the wildfire risk in Maricopa County Regional Parks. Update 04-10-2026 - “This event is changing to a native seed harvest event. Although we may pull a few weeds, we will mainly focus on harvesting native seed at the native seed garden.  We will...

Free with Park Fee

Maricopa County Parks and Recreation: City Nature Challenge Hike

San Tan Mountain Regional Park 6533 W. Phillips Rd., Queen Creek

Help document biodiversity of a scenic, under-visited part of the park while participating in the City Nature Challenge with Ranger Eric! The option to do a short vs. a longer...

Free with Park Fee

Maricopa County Parks and Recreation: City Nature Challenge Hike

Usery Mountain Regional Park 3939 N. Usery Pass Rd., Mesa

Join Ranger Jacque on a brief hike and use your phone to document biodiversity in the park for the City Nature Challenge global Citizen Science competition. Citizen Science Month 2026...

Free with Park Fee

Maricopa County Parks and Recreation: City Nature Challenge Hike

Spur Cross Ranch Conservation Area 44000 N. Spur Cross Rd., Cave Creek

Join Ranger Nikki on a moderate hike and use your phone to document biodiversity in the park for the City Nature Challenge global Citizen Science competition that runs April 24-27.  The City Nature Challenge is a global competition between cities to document biodiversity in regions around the world, taking place this year April 24-27. This...

Free with Park Fee

Maricopa County Parks and Recreation: Lake Pleasant – Earth Day Clean-Up

Lake Pleasant Regional Park 41835 N. Castle Hot Springs Rd., Morristown

Date - Saturday, April 25, 2026, EARTH DAY LITTER PICK UP EVENT Time – 8:00 am -11:00 am Location – Lake Pleasant Regional Park, Main Entry.  Directions:  From central Phoenix, take I-17 north to Carefree Highway (SR 74).  Exit Carefree Hwy. and travel west 15 miles to Castle Hot Spring Road (Milepost 19).  Turn north...

Free with Park Fee

Watershed Management: River Run Network Restoration Workshop: Tanque Verde Arundo Removal

Tanque Verde Creek/Wentworth Rd. Tucson

Join our community effort to restore Tanque Verde Creek! We invite people of all ages, diverse ethnic and racial backgrounds, beliefs, and many other diverse communities to participate in restoring our heritage of seasonal and year-round water flows. Come work with WMG staff and other River Run Network volunteers at these workshops in a beautiful riparian area to...

Free

Phoenix Zoo: Earth Day

Phoenix Zoo 455 N. Galvin Pkwy., Phoenix

We have the power to save our planet! Join us for games and activities and learn about conservation and renewable energy!

Free with Admission

Arizona Game and Fish Department: Citizen Science for Educators – A Hands-on Workshop

South Mountain Visitor Center 10409 S. Central Ave., Phoenix

Are you looking for ways to engage your students in real-world science? Would you like to learn more about citizen science and its role in wildlife conservation ? As Citizen Science Month wraps up, the Arizona Game and Fish Department is pleased to offer this exciting workshop designed specifically for educators. We will dive into...

Free

Maricopa County Parks and Recreation: Discovery Station – Connect with Nature through your Phone

Usery Mountain Regional Park 3939 N. Usery Pass Rd., Mesa

Stop by an information table where Ranger Jacque will teach you how to use your phone to identify and document your nature findings to help the scientific community. Citizen Science Month 2026 is an official partner of America 250, the campaign to celebrate the United States of America’s semiquincentennial anniversary.    Love nature but don't know...

Free with Park Fee

Phoenix Public Library: Let’s Build a City for Earth Month!

Phoenix Public Library - Saguaro Library 2808 N. 46th St., Phoenix

Using upcycled items like cardboard, bubble wrap, wrapping paper and more, we will create a colorful, unique cityscape. Working individually and together we will craft buildings and bridges using just our imaginations and simple materials! Families are encouraged to participate in making and creating at Saguaro. Guided activities will include science, technology, engineering, arts, or...

Free

Maricopa County Parks and Recreation: City Nature Challenge Hike

Hassayampa River Preserve 49614 U.S. Hwy. 60 89, Wickenburg

Join Ranger Kevin to learn about and document biodiversity in the park for the City Nature Challenge global Citizen Science competition that runs April 24-27th .   The City Nature Challenge is a global competition between cities to document biodiversity in regions around the world, taking place April 24-27th. Ranger Kevin will lead a hike with stops...

Free with Park Fee

Greater Phoenix City Nature Challenge 2026: Sustainability Fest

Arizona Science Center 600 E. Washington St., Phoenix

Discover how to live life more sustainably at Arizona Science Center’s Sustainability Fest Explore topics like rising seas, how to reduce your carbon footprint, composting and recycling, seed germination, and...

Free with Admission

Tempe Public Library: Climate Future Film Festival

Tempe Public Library 3500 S. Rural Rd., Tempe

This “mini-festival” features ten award-winning short films from four continents that invite inspiration, conversation, and hope around climate change.   Hope and panic, greed and courage, fear and comedy: ten...

Free

Maricopa County Parks and Recreation: Discovery Station – Be a Citizen Scientist!

Hassayampa River Preserve 49614 U.S. Hwy. 60 89, Wickenburg

Stop by an information table where Ranger Kevin will teach you how to use your phone to identify and document your nature findings to help the scientific community.   Ranger Kevin hosts a drop-in information table to get you on your way to becoming a Citizen Scientist using the free iNaturalist app that identifies and documents...

Free with Park Fee

Mesa Public Library: Saturday at the Ranch – Recycled Creations

Mesa Public Library - Dobson Ranch Branch 2425 S. Dobson Rd., Mesa

Families who craft together stay together. We’ll provide supplies, tools, and ideas to get you started, but the final creation is up to you. Engaging in creative activities like crafting...

Free

Verde Valley Birding and Nature Festival: Hummingbird Conservation

Cottonwood Recreation Center 150 S. 6th St., Cottonwood

Alice Madar, Executive Director of the International Hummingbird Society, will share her perspective on what makes hummingbirds so special, why targeted conservation for them is critical, what conservation projects are currently underway, and steps you can take to help hummingbirds. With 68% of the world's 370 species of hummingbird in decline, protecting these winged wonders...

$15