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The famed jaguar 'El Jefe' was observed by remote trail cameras in central Mexico last year.

A rare northern jaguar known for roaming Arizona's Santa Rita Mountains was recently observed central Sonora, Mexico, evidence of continued cross-border migration for the species. Read more»

El Jefe, one of the few wild jaguars in the United States, was photographed in Arizona's Santa Rita Mountains.

Jaguars are the only species of big cat found on the American continent, and though local populations across the continent are decreasing at alarming rates, some experts think it’s possible jaguars could return to the Southwest U.S. Read more»

An endangered jaguar captured by a remote camera in southeastern Arizona. The U.S. Fish and Wildlife Service identified 764,207 acres of critical habitat in the region for the endangered animal and recently rejected a request by developers of the planned Rosemont copper mine to eliminate 50,000 acres that would overlap with the mine.

Federal regulators on Friday rejected a mining company’s request to reduce critical habitat for endangered jaguars in the Santa Rita Mountains on land that overlaps the footprint of the proposed Rosemont Copper Mine. Read more»

Sections of the Trump-era border wall near Sasabe, Arizona in September 2020.

At the urging of U.S. Rep. Raúl Grijalva, the GAO is launching a review the impact of border wall construction under the Trump administration. DHS "blatantly abused its sweeping and potentially unconstitutional authority" to waive environmental laws, he said. Read more»

Despite efforts to save desert plants that were removed during the construction of the wall, not all those transplanted survived. Saguaro cactus, such as the one pictured, don’t usually start growing arms until they are at least 100 years old.

The Biden administration – which paused border wall construction in January – faces a logistical, ethical and political quandary in determining the best way to proceed with the half-finished project that’s has introduced more problems than it fixed and is part of construction ordered by then-President Donald Trump. Read more»

A jaguar was recently spotted in southern Arizona, suggesting suitable habitat exists along the border with Mexico. The big cats are rarely seen outside captivity, such as this one in a zoo in Amsterdam.

When Ganesh Marin was studying ecosystems along the border U.S.-Mexico this year, the University of Arizona Ph.D. student wasn’t expecting to see a young jaguar sauntering in his video feed in mid-March. Read more»

El Jefe, one of the few wild jaguars in the United States, was photographed in Arizona's Santa Rita Mountains.

After a years-long battle to protect the designation of stretches of the southwest as a protected habitat for the jaguar, a federal judge has ruled that the New Mexico land should no longer be protected for the largest New World cat. Read more»

Two Army Corps of Engineers officers look down the U.S.-Mexico border near Lukeville in this 2020 file photo. President Joe Biden ordered a halt in construction of the wall, which reached 450 miles under the Trump recently celebrated the completion of 450 miles of wall – a program President Joe Biden has pledged to end.

President Joe Biden made good on a campaign promise within hours of his swearing-in this week, ordering a pause in construction of the border wall and a plan for how to redirect wall funding. Opponents of the wall hailed the move but say more action is needed. Read more»

El Jefe, one of the few wild jaguars in the United States.

Three environmental groups challenging the border wall between the United States and Mexico argued Tuesday in a federal complaint that the plan will completely kill off a population of jaguar. Read more»

LIDAR, which stands for Light Detection and Ranging, is “a remote sensing method that uses light in the form of a pulsed laser to measure ranges to the Earth,” according to the National Oceanic and Atmospheric Administration.

Wildlife advocates say animals like the jaguar are at risk if President Donald Trump builds his planned border wall. But jaguars and their advocates may have an unlikely ally – the technology used in driverless cars. Read more»

Vehicle barriers along the southern Patagonia mountains divide the United States and Mexico, as well as a number of species habitats running between the two countries. Vehicle barriers make up roughly half of the Arizona-Mexico border infrastructure and are generally 'permeable' to wildlife crossing, but still present minor obstacbles to certain species.

President Trump wants to stop illegal immigration with a "big beautiful" wall along the U.S.-Mexico border, but experts agree it would harm the ecology of one of the most biodiverse regions of North America. Read more»

Four Arizona environmental groups filed a federal lawsuit, seeking to overturn a decision by the Forest Service allowing the controversial Rosemont open-pit copper mine to move closer to development south of Tucson. Read more»

A still frame from the jaguar video released Thursday.

Tucson's Center for Biological Diversity filed suit Monday, charging that the Trump administration violated federal rules when considering the environmental effects of an open-pit copper mine in the Santa Rita Mountains about 30 miles southeast of Tucson. Read more»

A still frame from the jaguar video released Thursday.

Video of a endangered wild jaguar released Thursday shows a big cat that was first photographed by a trail camera late last year. Dubbed "Sombra" by Tucson schoolkids, the jaguar was captured on tape in the Chiricahua Mountains. Later in the day, officials announced the cat is a male. Read more»

The controversial Rosemont Copper Mine is one step closer to development after the Forest Service signed off on one of two federal permits needed to begin operating the open-pit copper mine in the Santa Rita Mountains about 30 miles southeast of Tucson. Read more» 1

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