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Image of the flowing Santa Cruz River

Living River Ramble January

9:30 – 10:30 a.m., Jan. 25, 2026

Community cleanup at the Santa Cruz River

How Trash Research Helps Us Shape the Future of a Santa Cruz River Refuge (Virtual Event)

Noon – 1 p.m., Jan. 27, 2026

Bird flying over head with words El Rio Preserve

Birding at El Rio Preserve (February)

8 – 10 a.m., Feb. 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 (February)

8:30 – 10 a.m., Feb. 4, 2026

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

Signs of the Season Phenology Walk Early February

8 – 9 a.m., Feb. 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 February)

8 – 9:30 a.m., Feb. 12, 2026

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

Signs of the Season Phenology Walk Late February

8 – 9 a.m., Feb. 22, 2026

Image of the flowing Santa Cruz River

Living River Ramble February

9:30 – 10:30 a.m., Feb. 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 February)

8 – 9:30 a.m., Feb. 26, 2026

Bird flying over head with words El Rio Preserve

Birding at El Rio Preserve (March)

8 – 10 a.m., March 3, 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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