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Ongoing

Maricopa County Parks and Recreation: Estrella – Invasive Species Removal

Estrella Mountain Regional Park 14805 W. Vineyard Ave., Goodyear

Meet at the park’s Nature Center. Join us in removing invasive species and reducing wildfire risk in our parks. Participants will learn to identify several invasive species, their phenology and...

Free with Park Fee

Tucson Bird Alliance: Birdathon Fundraiser Field Trip – Tanque Verde Wash at Wentworth Rd

Join us for a special field trip to support the Birdathon fundraiser! Enjoy a fun and educational birding experience, all while supporting bird conservation. All registration fees will go directly to the Birdathon fundraiser, helping protect habitats and support critical bird conservation efforts. Let’s come together to celebrate birds and make a difference! Whether you’re...

$25.00

Maricopa County Parks and Recreation: Estrella – Invasive Species Removal

Estrella Mountain Regional Park 14805 W. Vineyard Ave., Goodyear

Meet at the park’s Nature Center. Join us in removing invasive species and reducing wildfire risk in our parks. Participants will learn to identify several invasive species, their phenology and characteristics, and how to effectively remove these invasive plants. The initiative is to remove invasive plants as a proactive step toward ecological restoration and to...

Free with Park Fee

Arizona State Parks and Trails: Guided Bird Walks at Red Rock

Red Rock State Park 4050 Red Rock Loop Rd., Sedona

Bird enthusiasts join a naturalist for a guided walk appropriate for beginner and advanced birders. Most year-round birds are found in the riparian area next to Oak Creek or along the field behind the Visitor Center. The Audubon Society has designated Red Rock State Park as part of the Lower Oak Creek Important Birding Area...

Free with Park Fee

Friends of the San Pedro River: San Pedro House Nature Walk

San Pedro House 9800 Highway 90, Sierra Vista

The San Pedro River is one of the last free flowing rivers in the Southwest and home to one of the largest cottonwood-willow riparian forests remaining in Arizona. On this walk we will discuss the interactions between the living and nonliving components that make up this unique riparian ecosystem and its importance to the surrounding...

Free

Maricopa County Parks and Recreation: Mesquite Festival

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

Hassayampa River Preserve Mesquite Festival. Discover all the “Tree of Life” has to offer at this free, family-friendly community event.   Discover all the “Tree of Life”, Mesquite, has to offer at this FREE, family-friendly community event. There will stations or speakers relating to the following topics: cooking tips, food sampling, kids games, and information on...

Free

Mission Garden: Traditional O’odham Agriculture

Mission Garden 946 W. Mission Ln., Tucson

Every third Saturday of the month At Mission Garden’s Placita (near the kitchen) This event is FREE. Mission Garden continues this tradition of talks and demonstrations about O'odham Agriculture. We talk about traditions associated with Native American crops and how crops brought by Europeans were integrated into O'odham agriculture.

Free

Friends of the San Pedro River: History Hikes – Murray Springs Clovis Site

Join FSPR docent Dwight Long for a tour of the Murray Springs mammoth kill site. Vance Haynes led an expedition here in the 1970s that found the remains of megafauna that had been hunted, killed, butchered, and consumed by the Clovis Paleo-Indians 13,000 years ago. This is an easy walk of less than a half...

Free

Phoenix Herpetological Sanctuary: Rattlesnake Relocation Training

Phoenix Herpetological Sanctuary Actual location given after reservations, Phoenix

The course is divided into two sections. The first half of the course is a classroom lecture portion where participants learn about misconceptions and discuss real rattlesnake behavior. The second half participants with learn how to safely relocate a rattlesnake using proper safety equipment. Each participant receives a certificate once they learn how to safely relocate a rattlesnake. If the participant...

$120.00

Arizona – Sonora Desert Museum: Venomous Creatures of the Sonoran Desert

Arizona - Sonora Desert Museum 2021 N. Kinney Rd., Tucson

The Sonoran Desert is home to a wide variety of venomous reptiles and arthropods and myths about them abound, yet only a handful are capable of producing medically significant injuries in people. Spend the morning learning which creatures are truly dangerous, how to identify them, avoid their bites and stings, and provide appropriate first aid....

$45 – $50

Maricopa County Parks and Recreation: Native Plant Hike

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

Join Ranger Kevin for an informative hike about the native plants that call the Sonoran Desert home.   April is Native Plant Month, and we are excited to give our native plants a little love. Come along and find out what makes our cactus, tree and shrub species so special. Plus, we’ll talk about why using...

Free with Park Fee

Watershed Management Group: Rain Garden Workshop

Watershed Management Group Living Lab and Learning Center 1137 N. Dodge Blvd., Tucson

Cool Down Tucson!! Literacy Connects in collaboration with Watershed Management Group is inviting you to a workshop on Rain Gardens, how to build them and their cooling effects on our community. It is getting hotter and hotter and trees, shrubs and grasses can cool down temperatures in our homes, streets, buildings and in general in...

Free

Natural History Institute: Prescott Earth Day Celebration

Join the Natural History Institute at the 2025 Prescott Earth Day Celebration! Visit the Downtown Prescott Courthouse Plaza on April 19th for over 60+ educational booths, exhibits, and activities to protect & celebrate the place we live!

Free

Children’s Museum of Phoenix: Going, Going, Green – Stewards of the Earth

Children's Museum of Phoenix 215 N. 7th St., Phoenix

It’s Going, Going, Green! Month, let’s learn about being good stewards of the earth! Visit Star Bar on the 2nd floor to learn about recycling in Phoenix, what to do with your recyclables, tips on composting and how to help animal habitats with a fun matching game. Make sure all the animals go to the right home!...

Free with Admission

Pima County Parks and Recreation: Tour of Historic Canoa Ranch

The Raul M. Grijalva Canoa Ranch Conservation Park 5375 S. I-19 Frontage Rd., Green Valley

Join a walking tour of the Canoa Ranch headquarters. Visit the historic buildings and corrals and enjoy the special exhibits of the people of Canoa.

Free

Boyce Thompson Arboretum: Nature Play

Boyce Thompson Arboretum 37615 E. Arboretum Way, Superior

Unplug and Reconnect with Nature! Join us for Nature Play at the Children’s Garden, where families can escape the screens and dive into the wonders of the great outdoors. Every Saturday, from October to April, bring your kids to explore, play, and learn in a safe, engaging environment. Outdoor play isn’t just fun; it’s essential!...

Free with Admission

Chandler Public Library: Ask a Master Gardener @ Sunset Library

Chandler Public Library - Sunset Campus 4930 W. Ray Rd., Chandler

University of Arizona Cooperative Extension Master Gardeners are certified volunteers who answer questions about gardening, landscaping, plant identification, and plant problems. If you have been wondering how to start and...

Free

Girl Scouts of Southern Arizona: Serpents’ Secret’s _ YUMA

Come one Come ALL! Join us on this adventure!   Prepare for an immersive, hands-on encounter at the Yuma Territorial Prison. Learn about snakes found at and around the Prison. You'll gain the expertise to distinguish between native snakes and learn best practices for identifying venomous and non-venomous species. Cosmos, a rescued native Sonoran gopher...

$17.00

Children’s Museum of Phoenix: Wildflower Seed Bombs

Children's Museum of Phoenix 215 N. 7th St., Phoenix

Let’s celebrate Earth Day on April 22nd! Stop by the Children’s Garden to make your very own wildflower seed bomb to plant at home!

Free with Admission

Watershed Management Group: Family Saturday – Beaver Believers!

Watershed Management Group Living Lab and Learning Center 1137 N. Dodge Blvd., Tucson

Join us at the Living Lab on Saturday, April 19th from 10:00am - 12:00pm to learn about the return of beavers to Tucson's rivers and what you can do to help them. This event is free for the whole family! This month’s featured activities include: Learn about beavers through arts and crafts, science experiments, and help to...

Free

Arizona State Parks and Trails: Daily Guided Nature Hikes at Red Rock

Red Rock State Park 4050 Red Rock Loop Rd., Sedona

Every morning, a volunteer naturalist leads a guided nature walk informing visitors about the different life zones of Red Rock State Park. The subjects discussed on this walk may include...

Free with Park Fee

Arizona State Parks and Trails: Catalina State Park Nature Program

Catalina State Park 11570 N. Oracle Rd., Tucson

The Nature Program is a live reptile exhibit and the perfect opportunity for people of all ages to learn all about Arizona’s wildlife! Our team of passionate, experienced volunteers are here to answer your questions and show you how these animals have adapted to survive in the Sonoran Desert. Meet at the Trailhead picnic area. This...

Free with Park Fee

Surprise Public Library: Lady Bug Adventure – Learn and Release!

Surprise Public Library - Asante Library 16755 W. Vereda Solana Dr., Surprise

Come join our exciting ladybug adventure at the Asante Library! We'll learn all about these cool insects and why they are super important for our environment. Then, we will go outside and release thousands of ladybugs into nature!

Free

Pima County Public Library: Fairy Garden Tales

Pima County Public Library - Quincie Douglas Library 1585 E. 36th St., Tucson

Do you want to learn to grow your own plants? Watch the seed turn into a veggie, herb or flower? Join us at the garden at Quincie Douglas Library.

Free

Yuma County Library District: Master Gardener Talks – Soils of Southern Arizona

Yuma County Library District - Heritage Library 350 Third Ave., Yuma

Unearth the mysteries of soils in Southern Arizona by digging into soil composition, how our soils are struggling, and what native plants to have in your garden to create healthy, strong soil! Adults 18+. First come first serve, as seating is limited.

Free

Phoenix Herpetological Sanctuary: Facility Tour

Phoenix Herpetological Sanctuary Actual location given after reservations, Phoenix

Interact with some of our special animals, which for many people is a once in a lifetime experience.  Guests will get to learn about endangered species, how we contribute to conservation of those animals,...

Free – $25

Flandrau Science Center & Planetarium: Expedition Reef

Flandrau Science Center & Planetarium 1601 E. University Blvd., Tucson

​​The Expedition Reef show reveals, in exquisite detail, the breathtaking beauty and biodiversity of coral reefs around the world—and the scientists taking action to restore them. Learn the secrets of the “rainforests of the sea.” Audience: General, all ages Style: Fulldome film followed by live talk about reefs   Planetarium Tickets Adults: $14 Children (ages 3-15): $10...

Free – $14

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

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

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 host 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

Pima County Public Library: Earth Day Crafternoon!

Pima County Public Library - Quincie Douglas Library 1585 E. 36th St., Tucson

Join us for a fun afternoon of crafting up special gifts and goodies to celebrate Earth Day! We will provide all crafting supplies and snacks to fuel your creativity!

Free

Embry – Riddle Aeronautical University: Whale Super Highway

Embry - Riddle Aeronautical University Jim and Linda Lee Planetarium 3700 Willow Creek Rd., Prescott

Show Times: Saturday, April 19: 2 p.m., 3 p.m. and 4 p.m. Whale Super Highway follows humpback whales and blue pygmy whales on their 4,000-mile migration down the coast of Western Australia to the freezing waters of Antarctica and back again. Once hunted to the brink of extinction, humpback whales have made an extraordinary recovery....

$7.50

Yuma County Library District: Earth Day – Nature Prints

Yuma County Library District - Main Library 2951 S. 21st Dr., Yuma

Join us for Nature Prints this Earth Day! Celebrate the beauty of nature by exploring, creating, and printing unique designs on clay using leaves, flowers, and other natural materials. For...

Free

Southeastern Arizona Bird Observatory: Hummingbird Banding at the San Pedro House

San Pedro House 9800 Highway 90, Sierra Vista

Up to 10 species of hummingbirds use the green corridor of the San Pedro River as a freeway between their tropical winter retreats and their northern nesting grounds. The public is invited to get a close-up look at these tiny travelers as staff and volunteers from the Southeastern Arizona Bird Observatory capture, band, weigh, measure,...

Free

Arizona State Parks and Trails: Bat Walk

Kartchner Caverns State Park 2980 AZ-90, Benson

Kartchner Caverns invites you to join us for a walk in the park as we uncover and learn about some of the 13 different neighboring bat species in the park. We will use bat detectors while on a walk through the beautiful desert night to see and hear some of them while learning about the diversity of these flying mammals. Boldly go where the...

$15