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Bird flying over head with words El Rio Preserve

Birding at El Rio Preserve (March)

8 – 10 a.m., March 3, 2026

Image of a phone with the camera pointing to a hummingbird. Text describes how this is a Smartphone Photography Walk.

Smartphone Photography Walk : El Rio Preserve (March)

8:30 – 10 a.m., March 4, 2026

A collection of images from the Sonoran Desert including cactus, birds, dragonfly and moon,

Signs of the Season Phenology Walk Early March

8 – 9 a.m., March 8, 2026

Image of water with brown hills behind the water and the words Nature Trek at El Rio Preserve

El Rio Preserve Nature Stroll (Early March)

8 – 9:30 a.m., March 12, 2026

Santa Cruz River Restoration (Tubac)

9 – 11 a.m., March 18, 2026

Spring 2026 information about Santa Cruz Watershed Days of Connection with images of people picking up trash

Santa Cruz Watershed Days of Connection: World Water Day Celebration

8 – 10 a.m., March 21, 2026

A collection of images from the Sonoran Desert including cactus, birds, dragonfly and moon,

Signs of the Season Phenology Walk Late March

8 – 9 a.m., March 22, 2026

Image of the flowing Santa Cruz River

Living River Ramble March

9:30 – 10:30 a.m., March 22, 2026

Image of water with brown hills behind the water and the words Nature Trek at El Rio Preserve

El Rio Preserve Nature Stroll (Late March)

8 – 9:30 a.m., March 26, 2026

Image of a phone with the camera pointing to a hummingbird. Text describes how this is a Smartphone Photography Walk.

Smartphone Photography Walk : El Rio Preserve (April)

8:30 – 10 a.m., April 1, 2026

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We respectfully acknowledge the University of Arizona is on the land and territories of Indigenous peoples. Today, Arizona is home to 22 federally recognized tribes, with Tucson being home to the O’odham and the Yaqui. The university strives to build sustainable relationships with sovereign Native Nations and Indigenous communities through education offerings, partnerships, and community service.

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