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Jaguars Return to Southern Arizona

In Southern Arizona, the top predator is the mountain lion, but over the last 15 years, solitary male jaguars, typically one at any given time, have migrated from Northern Mexico into Southern Arizona and New


If We All Stopped Eating Beef, What Would Happen to the Land?

The indictment of cattle as environmental polluters is correct with respect to factory meat farms, but completely mistaken as to cattle raised the old fashioned way – on grasslands, grazing as in nature.

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Arizona’s Mexican Wolf Restoration Project

See what Arizona Game and Fish and its federal, tribal and private partners are doing to recover the endangered Mexican wolf.


Shy Elk and Bold Birds Become Partners in the Wilderness

Complex relationships between species such as birds and grazers are common, but often unrecognized by over-simplified wildlife management theories. As a result, wildlife managers routinely attack species whose interdependence we do not understand. For example,

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Wild Burros Providing Water for Wildlife

In far-West Texas, a coalition of government agencies, agricultural universities and conservation organizations has decided that wild burros on public lands should be eradicated. The coalition based its decision on the belief that what the burros

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Mountain Lions of Far-West Texas

Much of what we used to ‘know’ about mountain lions turns out to be wrong, starting with the belief they are a threat to livestock or humans. Lions –  and all other predators –  are


Wolves’ Return to Oregon Brings Conflict and Opportunity

Wolves help wildlife and habitat but they also – historically with good cause – terrify many people. Mexican Wolves, the native wolf of far-West Texas, is a small and comparatively harmless relative of the larger

The Culling of Wild Deer Based on Antler Size Is Inefficient – at Best

As it turns out, a central practice of deer ‘management’ – the culling of so-called management deer based on their antler size – is somewhere between worthless and outright damaging to wild deer herd genetics

Environmental Quality Is More Than Just the Climate

The United States has done a very good job of reducing carbon emissions and human pollutants from sewage and industrial chemicals. But, simultaneously we have unleashed a devastating new environmental problem that has no smell

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Successful Pronghorn Transplants Require Ecosystem Health

Pronghorn cannot be restored by themselves. Healthy grasslands need periodic grazing by keystone species like bison or cattle, lots of prey and lots of predators. Removing any of these components will unwind the system. Animals,