Border Wall Construction Cuts Through Shaded, Biodiverse Corner of San Rafael Valley

July 27, 2026

Border wall construction continues in southern Arizona’s San Rafael Valley, causing senseless destruction. Cottonwoods estimated to be as old as our country have been toppled in Lochiel. And as you…
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Turtle on the Santa Cruz River

Feds Dam Santa Cruz River Ahead of Border Wall Construction

June 22, 2026

Video by Leslie Ann Epperson, SmallWheel Films. This is the second video in a series on border wall developments in the San Rafael Valley. More tough news from the San…
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Wildlife and the Wall in the Arizona-Sonora Borderlands

May 19, 2026

Border 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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Malpais Borderlands

Malpai Borderlands Conference

September 26, 2025

Join us in person or virtually at this free annual conference, led by ranchers in southeast Arizona and southwest New Mexico. There are several guest speakers who will present as part of the day’s conference, including SIA’s Eamon Harrity, who will give a talk on the border wall’s impacts on wildlife. Other talks will feature tarantulas, spotted cats, ranching strategies, and rewilding landscapes.

Wildlife and Walls: How Barriers on the U.S.-Mexico Border Impact Wildlife

September 25, 2025

Border walls are spreading around the world, including right here in Arizona. Since 2020, Sky Island Alliance has used motion-activated cameras to study the impacts of border barriers on wildlife movements. Join Eamon Harrity for this in-person talk to learn about these monitoring efforts and how different species respond to border barriers.

Tumamoc talks

Wildlife and the Wall: How Animals Navigate Barriers on the U.S.-Mexico Border

September 8, 2025

Border walls are spreading around the world, including right here in Arizona. Since 2020, Sky Island Alliance has used motion-activated cameras to study the impacts of border barriers on wildlife movements. Join Eamon Harrity to learn about these monitoring efforts and how different species respond to border barriers.

Alma Guadalupe Téllez

New Border Wall Is Underway; Our Sonoran Neighbors Offer Help

August 29, 2025

Dear friends, I’m touching base with an update on border wall construction in the Sky Islands, impacts to our Border Wildlife Study, and actions to take below.  For the past…
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Mountain lion stuck at border wall

Can the Border Wall Be Less Harmful to Wildlife? 

August 21, 2025

With new border wall construction starting this month in the Tucson Sector, wildlife will undergo further habitat fragmentation across the San Rafael Valley and Huachuca Mountains. Our research shows that border wall,…
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Montezuma Pass

An Unforgettable Sunset at Montezuma Pass

June 30, 2025

Hi, all! I’m Becca Thompson, the new field coordinator for Sky Island Alliance. You’ll see me helping Sarah and Bryon with fieldwork and volunteer support. I wanted to introduce myself by…
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San Rafael Valley

Help Survey Springs in the San Rafael Valley Ahead of Plans for 27 Miles of New Border Wall

June 17, 2025

Water sources like springs are imperiled along the border in the San Rafael Valley, due to impending construction of the Trump administration’s 30-foot-high border wall. It is estimated that 500,000…
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