Help Survey Springs Along the San Pedro
May 27, 2026This June, in partnership with The Nature Conservancy, Sky Island Alliance is supporting a Spring Seeker campaign along the San Pedro River, and we’re in need of self-motivated volunteers to…
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Erosion Control in the Catalinas
May 21, 2026Join us in the Santa Catalina Mountains for a weekend building erosion-control structures in areas burned by the 2020 Bighorn Fire. Together, we can protect springs from landslides and ensure the mountain absorbs even more rain and snowmelt, recharging the aquifer that plants, wildlife, and people like us depend on. Note: Carpooling from Tucson is available, and day-trippers are most welcome. We’ll be camping at Spencer Campground on Mt. Lemmon.
Video: Wildlife and the Wall in the Arizona-Sonora Borderlands
May 19, 2026Border wall construction in southern Arizona’s wild and scenic San Rafael Valley continues, with 12 of 27 miles completed and new wall going up each day. As you can see…
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Himdam, the Remarkable Ocelot That Traversed 4 Sky Islands
May 14, 2026This March, Sky Island Alliance and Phoenix Zoo published a study describing the remarkable journey of a male ocelot across four mountain ranges in the Sky Islands of Arizona, the…
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Trail Building and Discoveries in Sierra San José
May 5, 2026During our recent trail-building days in the Sierra San José, in Ejido Naco, Sonora, we’ve made significant progress thanks to the collaborative efforts of volunteers and the local community. Over…
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Workshop: Springs Trip Planning and Navigation
May 4, 2026Join SIA staff for an evening at our Tucson office getting ready for upcoming volunteer trips to visit springs within the Sky Islands. Topics covered will include: reading maps and satellite images, navigation aids on desktop computers and smartphones, making tracks and reading elevations and contours on maps, planning backcountry vs. trail walks, etc. With these skills, you’ll be ready to volunteer with confidence.
My First Border BioBlitz
My name is Ximena, and I’m an eighth-semester student of Environmental Sciences Engineering at the University of Sonora in Hermosillo. I’m going to share my experiences at my first Border…
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Springs: A Vital Network for Wildlife
April 29, 2026The Sky Islands region is made up of high-altitude mountains that appear as “islands” separated by grasslands and deserts. These mountains are well known and beloved for their biodiversity and…
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A Bloom to Watch for This Summer
April 28, 2026This article first appeared in The Desert Leaf and is part of a series featuring the Sky Islands. For years, my usual neighborhood walk along a dirt road lined with…
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Make the Call to Protect Our National Forests
April 17, 2026It only takes a few minutes, but a phone call to your elected officials in Congress could make the difference for our public lands. Step 1: Enter your ZIP code…
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